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: With the publication of Sophie's World in 1991, Gaarder gained international fame. Sophie's World spent three years as the best selling book in Norway. His first book to be translated into English, Sophie's World was also the top-selling book in Germany, France, and Great Britain. Sentence 2: Sophie's World is a best seller.

1