Context: Ireland and the United Kingdom are both part of the European Union (EU). The Crown Dependencies are not a part of the EU however do participate in certain aspects that were negotiated as a part of the UK's accession to the EU. Neither the United Kingdom or Ireland are part of the Schengen area, that allow passport-free travel between EU members states. However, since the partition of Ireland, an informal free-travel area had existed across the region. In 1997, this area required formal recognition during the course of negotiations for the Amsterdam Treaty of the European Union and is now known as the Common Travel Area.

Question: The United Kingdom is part of what union?
Answer: European Union (EU)

Question: What does the Schengen area allow in the European Union?
Answer: passport-free travel between EU members states

Question: When was a free-travel area created betwen Northern Ireland and Ireland?
Answer: 1997

Question: This free-travel area in Ireland is now called what?
Answer: Common Travel Area

Question: Ireland and the Crown Dependencies are part of what union?
Answer: Unanswerable

Question: What type of travel does the Amsterdam Treaty area allow?
Answer: Unanswerable

Question: Both the United Kingdom and Ireland are part of what area?
Answer: Unanswerable

Question: A formal free-travel area has existed across the region since when?
Answer: Unanswerable

Question: Since 1997 the area has required informal recognition and has become known as what?
Answer: Unanswerable