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: Doctors who treated Ayrton Senna after he crashed during the San Marino Grand Prix have denied allegations that the Brazilian driver died at the Imola track. Sentence 2: Ayrton Senna had the accident that caused his death at the San Marino Grand Prix.

1