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 man holding an owl in a lush green field'. How many words contain the letter 'y' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'two black chairs in a living room with a bright red wall'. How many words contain the letter 'w' in the sentence.


Output: 3