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: After giving nearly 5,000 people a second chance at life, doctors are celebrating the 25th anniversary of Britian's first heart transplant which was performed at Cambridgeshire's Papworth Hospital in 1979. Sentence 2: The first heart transplant in Britian was performed in 1979.

1