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: In 1969, more than 500 million people around the world sat in front of television sets, watching grainy images of two men in white bulky spacesuits planting a U.S. flag on the lunar landscape with its black horizon. Sentence 2: The Apollo astronauts waved the American flag on the moon in 1969.
Output:
1