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: The Titanic sank in 1912 after striking an iceberg on its maiden voyage from Southampton, England, to New York. Sentence 2: The Titanic sank in 1912.

1