Question:
Who was the owner of MS Costa Allegra in Jul, 1989?

Context:
 MS Costa Allegra is owned by Nordstjernan AB from Jan, 1969 to Jan, 1986. 
 MS Costa Allegra is owned by Regency Cruises from Jan, 1986 to Jan, 1988. 
 MS Costa Allegra is owned by Themis Maritime Ltd from Jan, 2012 to Jan, 2012. 
 MS Costa Allegra is owned by Compania Naviera Panalexandra from Jan, 1988 to Jan, 1990. 
 MS Costa Allegra is owned by Costa Cruises from Aug, 1990 to Jan, 2012.

Answer:
Question:
Who was the owner of MS Costa Allegra in Jul, 1989?

Context:
 MS Costa Allegra is owned by Nordstjernan AB from Jan, 1969 to Jan, 1986. 
 MS Costa Allegra is owned by Regency Cruises from Jan, 1986 to Jan, 1988. 
 MS Costa Allegra is owned by Themis Maritime Ltd from Jan, 2012 to Jan, 2012. 
 MS Costa Allegra is owned by Compania Naviera Panalexandra from Jan, 1988 to Jan, 1990. 
 MS Costa Allegra is owned by Costa Cruises from Aug, 1990 to Jan, 2012.

Answer:
user
Compania Naviera Panalexandra
assistant
Question:
Who was the owner of MS Costa Allegra in Jul, 1989?

Context:
 MS Costa Allegra is owned by Nordstjernan AB from Jan, 1969 to Jan, 1986. 
 MS Costa Allegra is owned by Regency Cruises from Jan, 1986 to Jan, 1988. 
 MS Costa Allegra is owned by Themis Maritime Ltd from Jan, 2012 to Jan, 2012. 
 MS Costa Allegra is owned by Compania Naviera Panalexandra from Jan, 1988 to Jan, 1990. 
 MS Costa Allegra is owned by Costa Cruises from Aug, 1990 to Jan, 2012.

Answer:
user
Nordstjernan AB
Costa Cruises
Themis Maritime Ltd
Regency Cruises
assistant
Question:
Who was the owner of MS Costa Allegra in Jul, 1989?

Context:
 MS Costa Allegra is owned by Nordstjernan AB from Jan, 1969 to Jan, 1986. 
 MS Costa Allegra is owned by Regency Cruises from Jan, 1986 to Jan, 1988. 
 MS Costa Allegra is owned by Themis Maritime Ltd from Jan, 2012 to Jan, 2012. 
 MS Costa Allegra is owned by Compania Naviera Panalexandra from Jan, 1988 to Jan, 1990. 
 MS Costa Allegra is owned by Costa Cruises from Aug, 1990 to Jan, 2012.

Answer:
user
Compania Naviera Panalexandra
assistant