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

Example Input: Sentence: 'a microwaved broccoli and cheese dish and a spoon'. How many words contain the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'an elephant that is eating some leaves from a tree'. How many words contain the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'a work boat floating in the middle of a vast lake bounded by mountains'. How many words contain the letter 'u' in the sentence.
Example Output:
2