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

[EX Q]: Sentence: 'a woman bent down on the street holding her umbrella'. How many words contain the letter 'x' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a commuter train near a platform with no one on it'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'two clocks are seen on the side of this building'. How many words contain the letter 'k' in the sentence.
[EX A]:
1