Instructions: 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 solar system is much more complicated now, astronomers say, than in 1930 when Clyde Tombaugh added Pluto to the inventory of wandering lights circling the Sun. Sentence 2: Pluto was discovered by Clyde Tombaugh.
Output:
1