TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a smiling man holds out a card with color swatches'. How many words contain the letter 'i' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a nicely kept shower with a seat inside'. How many words contain the letter 'a' in the sentence.

SOLUTION:
3