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

SOLUTION: 2

PROBLEM: Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'an old clock tower is seen next to a grassy area'. How many words contain the letter 'c' in the sentence.

SOLUTION:
1