TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a man standing in front of a statue near a metal pole'. Find frequency of the letter 'f'

SOLUTION: 2

PROBLEM: Sentence: 'there is a baseball game on and a few people are watching'. Find frequency of the letter 'i'

SOLUTION: 2

PROBLEM: Sentence: 'a boat goes across the water in front of buildings'. Find frequency of the letter 'a'

SOLUTION:
4