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

Example Input: Sentence: 'a big pan full of tasty looking meat and vegetables'. How many words contain the letter 'c' in the sentence.
Example Output: 0

Example Input: Sentence: 'a large elephant is walking by some bars'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'some people are standing near the amtrak tracks'. How many words contain the letter 'o' in the sentence.
Example Output:
2