Definition: In this task, you're given two sentences. Indicate if the first sentence clearly entails the second sentence (i.e., one can conclude the 2nd sentence by reading the 1st one). Indicate your answer with '1' if the first sentence entails the second sentence, otherwise answer with '0'.
Input: Sentence 1: President Vladimir Putin vowed Monday to track down the killers of Anna Politkovskaya, while her colleagues at Novaya Gazeta pledged to continue her work despite dangers. Sentence 2: Anna Politkovskaya was murdered.

1