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

Sentence: 'a white cat sitting on a couch in a den'. How many words contain the letter 'l' in the sentence.
0

Sentence: 'the young giraffe is standing near the fence'. How many words contain the letter 's' in the sentence.
2

Sentence: 'a man in a small boat with a tasty looking sandwich'. How many words contain the letter 's' in the sentence.

3