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

Example Input: Sentence: 'an older fighter plan sitting next to a group military men'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'adult picking ripe fruit from plant during daytime'. How many words contain the letter 'l' in the sentence.
Example Output:
2