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

[EX Q]: Sentence: 'a gray cat is wearing a santa hat'. How many words contain the letter 'm' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a fire hydrant on the side of the road near a building'. How many words contain the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a little giraffe standing and staring at something'. How many words contain the letter 'k' in the sentence.
[EX A]:
0