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: Sotheby's and Christie's, the world's two most powerful auction houses, swapped confidential lists of super-rich clients who were spared from paying fees charged to other sellers, people close to the companies and to a federal antitrust investigation of them said. Sentence 2: Christie's is one of the world's largest auction houses.

1