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

[Q]: Sentence: 'a small plain kitchen with a white stove and microwave'. How many words contain the letter 'h' in the sentence.
[A]: 3


[Q]: Sentence: 'young girls with backpacks are standing near stairs that look to go to the subway'. How many words contain the letter 'r' in the sentence.
[A]: 4


[Q]: Sentence: 'a close up of a pizza with toppings'. How many words contain the letter 'f' in the sentence.
[A]:
1