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

Example Input: Sentence: 'a zebra is standing in the shallow water'. How many words contain the letter 't' in the sentence.
Example Output: 3

Example Input: Sentence: 'a group of giraffes walk across an open area'. How many words contain the letter 'm' in the sentence.
Example Output: 0

Example Input: Sentence: 'a large white dead polar bear on display in a museum'. How many words contain the letter 'w' in the sentence.
Example Output:
1