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

Example Input: Sentence: 'a stuffed animal yellow giraffe placed next to a sandwich as if the giraffe is eating it with a large body of water and grass areas in the background'. How many words contain the letter 'g' in the sentence.
Example Output: 6

Example Input: Sentence: 'little girl with her bunny beside her sitting on a bench'. How many words contain the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a couple of people on a city street'. How many words contain the letter 'u' in the sentence.
Example Output:
1