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: Witching hour passed and Potter fans poured into bookshops around the world on Saturday, snatching up copies of the latest instalment in the series that promises to be the fastest-selling book in history. Sentence 2: Potter fans rushed to tills in order to purchase the book.
Output:
1