TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a pair of feet wearing slippers pointed at the floor'. How many words contain the letter 'e' in the sentence.

SOLUTION: 5

PROBLEM: Sentence: 'a pair of people swimming out to sea on some surfboards'. How many words contain the letter 'j' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a man in white shirt on cellphone with a tiny umbrella extension'. How many words contain the letter 'm' in the sentence.

SOLUTION:
2