You will be given a sentence. Check whether the sentence is grammatically correct and is meaningful. If the sentence is grammatically correct, then answer with '1', otherwise answer with '0'.

Example Input: The hardest that that it has snowed here is believed was last January 12th.
Example Output: 0

Example Input: Although Bob may not be a nut, many people have claimed and I think so too.
Example Output: 0

Example Input: David broke the window with a hammer.
Example Output:
1