Question: On what date did a Canadian politician born January 2, 1979, succeed as leader of the New Democratic Party in Canada? 
Sentence (from "Jagmeet Singh"): Jagmeet Singh Jimmy Dhaliwal {'1': ", '2': ", '3': ", '4': "} (born January 2, 1979), known professionally as Jagmeet Singh ( ), is a Canadian politician who is leader of the New Democratic Party.
Relevant evidence: Yes