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

[EX Q]: Sentence: 'bus parked next to a side walk on the road'. How many words contain the letter 'd' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a kitchen with hard wood floors and a stove top oven'. How many words contain the letter 'g' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a commuter train stops for passengers to board'. How many words contain the letter 's' in the sentence.
[EX A]:
2