TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'trash cans and a fire hydrant are on the curb of a sidewalk'. How many words contain the letter 'u' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'zebras grazing on green grass in a zoo enclosure'. How many words contain the letter 'u' in the sentence.

SOLUTION:
1