In this task, you need to count the number of words in a sentence that contain the given letter
--------
Question: Sentence: 'a boy is doing a trick with his skateboard'. How many words contain the letter 'y' in the sentence.

Answer: 1


Question: Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.

Answer: 0


Question: Sentence: 'a black and tan motorcycle on a street'. How many words contain the letter 'b' in the sentence.

Answer:
1