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

[EX Q]: Sentence: 'a man with a skateboard up in air at a skateboard park'. How many words contain the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a woman holding a baby with two birds on her shoulder'. How many words contain the letter 'e' in the sentence.
[EX A]:
2