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

[EX Q]: Sentence: 'a train that is pulling into the station'. How many words contain the letter 't' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a person in ski gear going down a small hill'. How many words contain the letter 'f' in the sentence.
[EX A]:
0