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

Example Input: Sentence: 'a wooden bench sits leveled straight on a slanted ground'. How many words contain the letter 'l' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bunch of cloths are piled in the sink'. How many words contain the letter 'w' in the sentence.
Example Output: 0

Example Input: Sentence: 'large city bus at a stop with a field of snow next to it'. How many words contain the letter 'i' in the sentence.
Example Output:
4