TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a woman in a wheelchair is about to play tennis'. How many words contain the letter 'r' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a person is watching tv in the living room'. How many words contain the letter 'n' in the sentence.

SOLUTION:
4