In this task, you need to count the number of words in a sentence that contain the given letter
--------
Question: Sentence: 'a smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.

Answer: 1


Question: Sentence: 'a mother and son holding wii controls in front of a christmas fireplace'. How many words contain the letter 'x' in the sentence.

Answer: 0


Question: Sentence: 'sign on yellow gate warning of fine for trespassers'. How many words contain the letter 'y' in the sentence.

Answer:
1