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

[Q]: Sentence: 'a man in a suit with his finger in his ear'. How many words contain the letter 'm' in the sentence.
[A]: 1


[Q]: Sentence: 'an asian man ad woman on their cell phones'. How many words contain the letter 'i' in the sentence.
[A]: 2


[Q]: Sentence: 'a scene with people on skateboards and roller blades'. How many words contain the letter 'a' in the sentence.
[A]:
4