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

[Q]: Sentence: 'a group of bears sitting next to each other on a sidewalk'. How many words contain the letter 't' in the sentence.
[A]: 4


[Q]: Sentence: 'a white plate of food including rice and vegetables with beef'. How many words contain the letter 'o' in the sentence.
[A]: 2


[Q]: Sentence: 'a green and white street sign on a pole and a light'. How many words contain the letter 's' in the sentence.
[A]:
2