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

[Q]: Sentence: 'a pair of feet wearing slippers pointed at the floor'. How many words contain the letter 'e' in the sentence.
[A]: 5


[Q]: Sentence: 'a beautiful old clock tower in a citys historic district'. How many words contain the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a family of giraffe standing next to each other'. How many words contain the letter 'w' in the sentence.
[A]:
0