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

Example Input: Sentence: 'an untidy room with clothes bottles next to an oven'. How many words contain the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'the corner of a bathroom with washrags and cleaning supplies'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a kite that is sitting up against a house'. How many words contain the letter 'h' in the sentence.
Example Output:
2