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: Iran will hold the first runoff presidential election in its history, between President Akbar Hashemi Rafsanjani and Tehran's hard-line mayor, election officials said Saturday. Sentence 2: Hashemi Rafsanjani will face Tehran's hard-line mayor in Iran's first runoff presidential election ever, officials said Saturday.

1