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

Input: Consider Input: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a zebra is standing in the shallow water'. How many words contain the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a pizza in a box with several slices taken out of it'. How many words contain the letter 'b' in the sentence.


Output: 1