In this task, you need to count the number of words in a sentence that contain the given letter

Input: Consider Input: Sentence: 'a large brown dog with a white deflated ball in its mouth'. How many words contain the letter 'm' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'the tennis player returns a serve of the tennis ball'. How many words contain the letter 'q' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'two boats parked at the shore and several farther out'. How many words contain the letter 'z' in the sentence.


Output: 0