TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a young man attempting to fly a kite on a forest hillside'. How many words contain the letter 'f' in the sentence.

SOLUTION: 2

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 man on a surfboard riding a wave'. How many words contain the letter 'd' in the sentence.

SOLUTION:
2