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

[EX Q]: Sentence: 'a white biplane on grassy area next to buildings'. How many words contain the letter 'g' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man with a long coat and a hat skating on the road'. How many words contain the letter 'q' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a smiling man sits on a very small motorcycle'. How many words contain the letter 'c' in the sentence.
[EX A]:
1