Question:
Who was the head of state of Denmark in Dec, 1909?

Context:
 Christian VII of Denmark is the head of the state of Denmark from Jan, 1766 to Mar, 1808. 
 Frederick IV of Denmark is the head of the state of Denmark from Aug, 1699 to Oct, 1730. 
 Christian VI of Denmark is the head of the state of Denmark from Oct, 1730 to Aug, 1746. 
 Christian VIII of Denmark is the head of the state of Denmark from Dec, 1839 to Jan, 1848. 
 Christian II of Denmark is the head of the state of Denmark from Feb, 1513 to Apr, 1523. 
 Margrethe II of Denmark is the head of the state of Denmark from Jan, 1972 to Jan, 1972. 
 Frederick III of Denmark is the head of the state of Denmark from Jul, 1648 to Feb, 1670. 
 Frederick IX of Denmark is the head of the state of Denmark from Apr, 1947 to Jan, 1972. 
 John, King of Denmark is the head of the state of Denmark from May, 1481 to Feb, 1513. 
 Christian X of Denmark is the head of the state of Denmark from May, 1912 to Apr, 1947. 
 Frederick VIII of Denmark is the head of the state of Denmark from Jan, 1906 to May, 1912. 
 Frederick V of Denmark is the head of the state of Denmark from Aug, 1746 to Jan, 1766. 
 Christian IV of Denmark is the head of the state of Denmark from Apr, 1588 to Feb, 1648. 
 Frederick VII of Denmark is the head of the state of Denmark from Jan, 1848 to Nov, 1863. 
 Christian I of Denmark is the head of the state of Denmark from Sep, 1448 to May, 1481. 
 Christian IX of Denmark is the head of the state of Denmark from Nov, 1863 to Jan, 1906. 
 Frederick II of Denmark is the head of the state of Denmark from Jan, 1559 to Apr, 1588. 
 Christian V of Denmark is the head of the state of Denmark from Feb, 1670 to Aug, 1699. 
 Frederick VI of Denmark is the head of the state of Denmark from Mar, 1808 to Dec, 1839. 
 Eric of Pomerania is the head of the state of Denmark from Jan, 1396 to Jan, 1439. 
 Christian III of Denmark is the head of the state of Denmark from Jul, 1534 to Jan, 1559. 
 Christopher of Bavaria is the head of the state of Denmark from Apr, 1440 to Jan, 1448. 
 Frederick I of Denmark is the head of the state of Denmark from Apr, 1523 to Apr, 1533.

Answer:
Question:
Who was the head of state of Denmark in Dec, 1909?

Context:
 Christian VII of Denmark is the head of the state of Denmark from Jan, 1766 to Mar, 1808. 
 Frederick IV of Denmark is the head of the state of Denmark from Aug, 1699 to Oct, 1730. 
 Christian VI of Denmark is the head of the state of Denmark from Oct, 1730 to Aug, 1746. 
 Christian VIII of Denmark is the head of the state of Denmark from Dec, 1839 to Jan, 1848. 
 Christian II of Denmark is the head of the state of Denmark from Feb, 1513 to Apr, 1523. 
 Margrethe II of Denmark is the head of the state of Denmark from Jan, 1972 to Jan, 1972. 
 Frederick III of Denmark is the head of the state of Denmark from Jul, 1648 to Feb, 1670. 
 Frederick IX of Denmark is the head of the state of Denmark from Apr, 1947 to Jan, 1972. 
 John, King of Denmark is the head of the state of Denmark from May, 1481 to Feb, 1513. 
 Christian X of Denmark is the head of the state of Denmark from May, 1912 to Apr, 1947. 
 Frederick VIII of Denmark is the head of the state of Denmark from Jan, 1906 to May, 1912. 
 Frederick V of Denmark is the head of the state of Denmark from Aug, 1746 to Jan, 1766. 
 Christian IV of Denmark is the head of the state of Denmark from Apr, 1588 to Feb, 1648. 
 Frederick VII of Denmark is the head of the state of Denmark from Jan, 1848 to Nov, 1863. 
 Christian I of Denmark is the head of the state of Denmark from Sep, 1448 to May, 1481. 
 Christian IX of Denmark is the head of the state of Denmark from Nov, 1863 to Jan, 1906. 
 Frederick II of Denmark is the head of the state of Denmark from Jan, 1559 to Apr, 1588. 
 Christian V of Denmark is the head of the state of Denmark from Feb, 1670 to Aug, 1699. 
 Frederick VI of Denmark is the head of the state of Denmark from Mar, 1808 to Dec, 1839. 
 Eric of Pomerania is the head of the state of Denmark from Jan, 1396 to Jan, 1439. 
 Christian III of Denmark is the head of the state of Denmark from Jul, 1534 to Jan, 1559. 
 Christopher of Bavaria is the head of the state of Denmark from Apr, 1440 to Jan, 1448. 
 Frederick I of Denmark is the head of the state of Denmark from Apr, 1523 to Apr, 1533.

Answer:
user
Frederick VIII of Denmark
assistant
Question:
Who was the head of state of Denmark in Dec, 1909?

Context:
 Christian VII of Denmark is the head of the state of Denmark from Jan, 1766 to Mar, 1808. 
 Frederick IV of Denmark is the head of the state of Denmark from Aug, 1699 to Oct, 1730. 
 Christian VI of Denmark is the head of the state of Denmark from Oct, 1730 to Aug, 1746. 
 Christian VIII of Denmark is the head of the state of Denmark from Dec, 1839 to Jan, 1848. 
 Christian II of Denmark is the head of the state of Denmark from Feb, 1513 to Apr, 1523. 
 Margrethe II of Denmark is the head of the state of Denmark from Jan, 1972 to Jan, 1972. 
 Frederick III of Denmark is the head of the state of Denmark from Jul, 1648 to Feb, 1670. 
 Frederick IX of Denmark is the head of the state of Denmark from Apr, 1947 to Jan, 1972. 
 John, King of Denmark is the head of the state of Denmark from May, 1481 to Feb, 1513. 
 Christian X of Denmark is the head of the state of Denmark from May, 1912 to Apr, 1947. 
 Frederick VIII of Denmark is the head of the state of Denmark from Jan, 1906 to May, 1912. 
 Frederick V of Denmark is the head of the state of Denmark from Aug, 1746 to Jan, 1766. 
 Christian IV of Denmark is the head of the state of Denmark from Apr, 1588 to Feb, 1648. 
 Frederick VII of Denmark is the head of the state of Denmark from Jan, 1848 to Nov, 1863. 
 Christian I of Denmark is the head of the state of Denmark from Sep, 1448 to May, 1481. 
 Christian IX of Denmark is the head of the state of Denmark from Nov, 1863 to Jan, 1906. 
 Frederick II of Denmark is the head of the state of Denmark from Jan, 1559 to Apr, 1588. 
 Christian V of Denmark is the head of the state of Denmark from Feb, 1670 to Aug, 1699. 
 Frederick VI of Denmark is the head of the state of Denmark from Mar, 1808 to Dec, 1839. 
 Eric of Pomerania is the head of the state of Denmark from Jan, 1396 to Jan, 1439. 
 Christian III of Denmark is the head of the state of Denmark from Jul, 1534 to Jan, 1559. 
 Christopher of Bavaria is the head of the state of Denmark from Apr, 1440 to Jan, 1448. 
 Frederick I of Denmark is the head of the state of Denmark from Apr, 1523 to Apr, 1533.

Answer:
user
Frederick V of Denmark
Frederick IX of Denmark
Frederick VII of Denmark
Christian VII of Denmark
Frederick II of Denmark
Frederick VI of Denmark
Christian V of Denmark
Christian III of Denmark
Frederick I of Denmark
Christian X of Denmark
Frederick IV of Denmark
Frederick III of Denmark
Christian II of Denmark
Christopher of Bavaria
Eric of Pomerania
Margrethe II of Denmark
Christian I of Denmark
Christian VI of Denmark
Christian IV of Denmark
John, King of Denmark
Christian VIII of Denmark
Christian IX of Denmark
assistant
Question:
Who was the head of state of Denmark in Dec, 1909?

Context:
 Christian VII of Denmark is the head of the state of Denmark from Jan, 1766 to Mar, 1808. 
 Frederick IV of Denmark is the head of the state of Denmark from Aug, 1699 to Oct, 1730. 
 Christian VI of Denmark is the head of the state of Denmark from Oct, 1730 to Aug, 1746. 
 Christian VIII of Denmark is the head of the state of Denmark from Dec, 1839 to Jan, 1848. 
 Christian II of Denmark is the head of the state of Denmark from Feb, 1513 to Apr, 1523. 
 Margrethe II of Denmark is the head of the state of Denmark from Jan, 1972 to Jan, 1972. 
 Frederick III of Denmark is the head of the state of Denmark from Jul, 1648 to Feb, 1670. 
 Frederick IX of Denmark is the head of the state of Denmark from Apr, 1947 to Jan, 1972. 
 John, King of Denmark is the head of the state of Denmark from May, 1481 to Feb, 1513. 
 Christian X of Denmark is the head of the state of Denmark from May, 1912 to Apr, 1947. 
 Frederick VIII of Denmark is the head of the state of Denmark from Jan, 1906 to May, 1912. 
 Frederick V of Denmark is the head of the state of Denmark from Aug, 1746 to Jan, 1766. 
 Christian IV of Denmark is the head of the state of Denmark from Apr, 1588 to Feb, 1648. 
 Frederick VII of Denmark is the head of the state of Denmark from Jan, 1848 to Nov, 1863. 
 Christian I of Denmark is the head of the state of Denmark from Sep, 1448 to May, 1481. 
 Christian IX of Denmark is the head of the state of Denmark from Nov, 1863 to Jan, 1906. 
 Frederick II of Denmark is the head of the state of Denmark from Jan, 1559 to Apr, 1588. 
 Christian V of Denmark is the head of the state of Denmark from Feb, 1670 to Aug, 1699. 
 Frederick VI of Denmark is the head of the state of Denmark from Mar, 1808 to Dec, 1839. 
 Eric of Pomerania is the head of the state of Denmark from Jan, 1396 to Jan, 1439. 
 Christian III of Denmark is the head of the state of Denmark from Jul, 1534 to Jan, 1559. 
 Christopher of Bavaria is the head of the state of Denmark from Apr, 1440 to Jan, 1448. 
 Frederick I of Denmark is the head of the state of Denmark from Apr, 1523 to Apr, 1533.

Answer:
user
Frederick VIII of Denmark
assistant