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

[EX Q]: Sentence: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'this bus waits at a bus station for passengers to board'. How many words contain the letter 'e' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman in a field of flowers holding an orange umbrella'. How many words contain the letter 'a' in the sentence.
[EX A]:
6