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

Sentence: 'a tree by a house has a traffic sign attached to it'. How many words contain the letter 'm' in the sentence.
0

Sentence: 'a room with a small light in the middle with a computer'. How many words contain the letter 's' in the sentence.
1

Sentence: 'a young girl outside with a skateboard and a helmet'. How many words contain the letter 'x' in the sentence.

0