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

Example Input: Sentence: 'adult men playing with flying disc at popular beach'. How many words contain the letter 'o' in the sentence.
Example Output: 1

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: 'several children feeding a horse from behind a fence'. How many words contain the letter 'd' in the sentence.
Example Output:
3