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

Example Input: Sentence: 'a person is riding a bicycle on the street'. How many words contain the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'two zebras standing next to each other in the dried grass'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'an orange and an apple sitting in a white bowl'. How many words contain the letter 's' in the sentence.
Example Output:
1