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

Example Input: Sentence: 'the black bears are together on the rocks eating outside'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'street signs are affixed to a utility pole'. How many words contain the letter 'u' in the sentence.
Example Output: 1

Example Input: Sentence: 'a person on a skate board tries to do a trick'. How many words contain the letter 'v' in the sentence.
Example Output:
0