You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: The final major piece of comet Shoemaker-Levy 9 was to hit just after midnight, completing a ring of crater-like plumes of swirling superheated gas and debris thousands of miles across. "It hit Jupiter like a string of machine-gun bullets" said Eugene Shoemaker, an astronomer at the Lowell Observatory in Flagstaff, Ariz., who helped discover the comet last year. Sentence 2: The Shoemaker-Levy comet hit Jupiter.
Output:
1