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

[Q]: Sentence: 'a modern looking bathroom has a toilet and a sink'. How many words contain the letter 'o' in the sentence.
[A]: 4


[Q]: Sentence: 'trash cans and a fire hydrant are on the curb of a sidewalk'. How many words contain the letter 'u' in the sentence.
[A]: 1


[Q]: Sentence: 'a german shepherd dog laying down and relaxing'. How many words contain the letter 'o' in the sentence.
[A]:
2