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

[EX Q]: Sentence: 'the train needs to be serviced so it is o the truck'. How many words contain the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a person in uniform is on a motorcycle near other uniformed people'. How many words contain the letter 'r' in the sentence.
[EX A]: 6

[EX Q]: Sentence: 'a person riding a motorcycle taking a sharp turn'. How many words contain the letter 'd' in the sentence.
[EX A]:
1