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

[Q]: Sentence: 'an untidy room with clothes bottles next to an oven'. How many words contain the letter 'a' in the sentence.
[A]: 2


[Q]: Sentence: 'a large brown dog with a white deflated ball in its mouth'. How many words contain the letter 'm' in the sentence.
[A]: 1


[Q]: Sentence: 'a volleyball net set up on the beach'. How many words contain the letter 'b' in the sentence.
[A]:
2