2939
The submarine was among  British  vessels sent to the Baltic Sea during WWI on the order of  Winston Churchill  -- who at the time headed the British Navy -- to support Russia in its attempts to stop German shipments of iron ore from Sweden .
 origin: British, Winston Churchill
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 origin: British, Winston Churchill