TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a black sign that is standing in the grass'. How many words contain the letter 'f' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a skier skiing on the mountain with trees behind him'. How many words contain the letter 'z' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a man riding up a ramp with a skateboard on'. How many words contain the letter 't' in the sentence.

SOLUTION:
2