TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a child on the sand and a boat and some water'. How many words contain the letter 's' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a man is defending his halfeaten banana'. How many words contain the letter 'n' in the sentence.

SOLUTION:
4