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: Fishermen using the poison sodium cyanide have helped to destroy an estimated 70% of the reefs. Sentence 2: Cyanide fishing is linked to the destruction of area reefs.

1