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

[EX Q]: Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'two people riding on the back of a large elephant'. How many words contain the letter 't' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'an electric engine pulls a long train of cargo cars'. How many words contain the letter 'g' in the sentence.
[EX A]:
3