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

Example Input: Sentence: 'a white pickup truck thats parked on the corner of an intersection'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.
Example Output: 0

Example Input: Sentence: 'a passanger train on the railroad tracks by a gravel and grassy road'. How many words contain the letter 'f' in the sentence.
Example Output:
0