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

Sentence: 'a smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.
1

Sentence: 'several men standing up in a large room holding wii controllers'. How many words contain the letter 'h' in the sentence.
1

Sentence: 'speed boat coming up next to fishing boat on ocean'. How many words contain the letter 'a' in the sentence.

3