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

Example Input: Sentence: 'zebra eating from the ground near a tree'. How many words contain the letter 'k' in the sentence.
Example Output: 0

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: 'a large passenger plane is flying in a cloudy sky'. How many words contain the letter 'r' in the sentence.
Example Output:
2