TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'martha stewart holding a fluffy siamese cat on her arms'. How many words contain the letter 'a' in the sentence.

SOLUTION: 6

PROBLEM: Sentence: 'a woman carrying her surfboard to the ocean'. How many words contain the letter 'q' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'three people sitting on a couch and two of them are holding a plate'. How many words contain the letter 'r' in the sentence.

SOLUTION:
2