In this task, you need to count the number of words in a sentence that contain the given letter
--------
Question: Sentence: 'skate boarder trying to maintain his balance during stunt'. How many words contain the letter 'w' in the sentence.

Answer: 0


Question: Sentence: 'an elephant standing on a green grass area'. How many words contain the letter 'm' in the sentence.

Answer: 0


Question: Sentence: 'a young boy riding on a skateboard with a red truck in the background'. How many words contain the letter 'i' in the sentence.

Answer:
3