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

[EX Q]: Sentence: 'a child is lighting candles on a cake'. How many words contain the letter 't' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'an older fighter plan sitting next to a group military men'. How many words contain the letter 'y' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a small town with a river going through the center of it'. How many words contain the letter 'o' in the sentence.
[EX A]:
4