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

Input: Consider Input: Sentence: 'a green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a cat with a collar sitting by a woman'. How many words contain the letter 'm' in the sentence.


Output: 1