TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a picture of a machine built next to a street'. Find frequency of the letter 'x'

SOLUTION: 1

PROBLEM: Sentence: 'a bowl of vegetables in a soup like substance next to a spoon'. Find frequency of the letter 'a'

SOLUTION: 5

PROBLEM: Sentence: 'a downhill skier with snow plumes behind them'. Find frequency of the letter 'i'

SOLUTION:
4