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

Input: Consider Input: Sentence: 'looking out a window at a tall building with a clock on the face'. How many words contain the letter 'l' in the sentence.

Output: 4


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 baby in a high chair with a feast in front of him'. How many words contain the letter 'i' in the sentence.


Output: 6