TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a man and a woman sitting in the backseat as the woman talks on a cell phone'. How many words contain the letter 's' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'the view from the top of a ski slope'. How many words contain the letter 'r' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'group of men in uniform typing on their cellphones'. How many words contain the letter 'j' in the sentence.

SOLUTION:
0