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

Example Input: Sentence: 'an elephant near a man sitting down'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a beautiful woman playing with a small green bird'. How many words contain the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'a boy tucks his knees to complete a jump on his skate board'. How many words contain the letter 'f' in the sentence.
Example Output:
0