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

Example Input: Sentence: 'this is a portion of a painting showing a banana and an orange'. How many words contain the letter 't' in the sentence.
Example Output: 3

Example Input: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a bunch of small boats in a harbor'. How many words contain the letter 'r' in the sentence.
Example Output:
1