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

[EX Q]: Sentence: 'an old airplane sitting on top of a field'. How many words contain the letter 'h' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'some elephants in a field of grass near a tree'. How many words contain the letter 'k' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a man stands with a frown on his face'. How many words contain the letter 'w' in the sentence.
[EX A]:
2