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

Example Input: Sentence: 'a woman sits on the ground in front of a baby holding a flying disc'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'an image of a man with a tennis racket in hand'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a bright red umbrella with a view of the ocean and mountains behind it'. How many words contain the letter 'b' in the sentence.
Example Output:
3