Question:
Who was the owner of MS Marco Polo in Apr, 1983?

Context:
 MS Marco Polo is owned by Orient Lines from Jan, 1991 to Jan, 2008. 
 MS Marco Polo is owned by Baltic Sea Steamship Company from Jan, 1965 to Jan, 1985. 
 MS Marco Polo is owned by Far East Shipping Company from Jan, 1985 to Jan, 1991.

Answer:
Question:
Who was the owner of MS Marco Polo in Apr, 1983?

Context:
 MS Marco Polo is owned by Orient Lines from Jan, 1991 to Jan, 2008. 
 MS Marco Polo is owned by Baltic Sea Steamship Company from Jan, 1965 to Jan, 1985. 
 MS Marco Polo is owned by Far East Shipping Company from Jan, 1985 to Jan, 1991.

Answer:
user
Baltic Sea Steamship Company
assistant
Question:
Who was the owner of MS Marco Polo in Apr, 1983?

Context:
 MS Marco Polo is owned by Orient Lines from Jan, 1991 to Jan, 2008. 
 MS Marco Polo is owned by Baltic Sea Steamship Company from Jan, 1965 to Jan, 1985. 
 MS Marco Polo is owned by Far East Shipping Company from Jan, 1985 to Jan, 1991.

Answer:
user
Orient Lines
Far East Shipping Company
assistant
Question:
Who was the owner of MS Marco Polo in Apr, 1983?

Context:
 MS Marco Polo is owned by Orient Lines from Jan, 1991 to Jan, 2008. 
 MS Marco Polo is owned by Baltic Sea Steamship Company from Jan, 1965 to Jan, 1985. 
 MS Marco Polo is owned by Far East Shipping Company from Jan, 1985 to Jan, 1991.

Answer:
user
Baltic Sea Steamship Company
assistant