Question: FOR HOW LONG DID NOBEL PEACE PRIZE WINNER, INVOLVED IN UNEF ESTABLISHMENT, PRIME MINISTER OF CANADA?
Sentence (from "United Nations Emergency Force"): The force was developed in large measure as a result of efforts by UN Secretary-General Dag Hammarskjöld and a Nobel Peace Prize-winning (1957) proposal and effort from Canadian Minister of External Affairs Lester B. Pearson.
Relevant evidence: Yes