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

Example Input: Sentence: 'a white sand beach with chairs umbrellas and people'. How many words contain the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'some elephants in a field of grass near a tree'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'a mischievous black cat rummaging through a ladies black purse'. How many words contain the letter 'b' in the sentence.
Example Output:
2