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

Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.
3

Sentence: 'some people standing around a line of tennis courts'. How many words contain the letter 'c' in the sentence.
1

Sentence: 'the large cat sits on the ledge beside a window'. How many words contain the letter 'o' in the sentence.

2