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

[EX Q]: Sentence: 'sitting room with couch and entertainment system in cabinets'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a mother and son holding wii controls in front of a christmas fireplace'. How many words contain the letter 'x' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a boy is doing a trick with his skateboard'. How many words contain the letter 'y' in the sentence.
[EX A]:
1