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

Example Input: Sentence: 'the bathroom has a shower toilet toilet paper and a sink with leaves in it'. How many words contain the letter 'v' in the sentence.
Example Output: 1

Example Input: Sentence: 'a pair of feet wearing slippers pointed at the floor'. How many words contain the letter 'e' in the sentence.
Example Output: 5

Example Input: Sentence: 'a man sitting on a seat in the back of a van'. How many words contain the letter 'h' in the sentence.
Example Output:
1