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

Example Input: Sentence: 'a group of bears sitting next to each other on a sidewalk'. How many words contain the letter 't' in the sentence.
Example Output: 4

Example Input: Sentence: 'some brown and white goats and a man on some grass'. How many words contain the letter 'o' in the sentence.
Example Output: 5

Example Input: Sentence: 'a photo taken from a boat looking at a person being pulled on skis'. How many words contain the letter 'd' in the sentence.
Example Output:
1