TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a tower with some bright lights and clocks on it'. Find frequency of the letter 'h'

SOLUTION: 3

PROBLEM: Sentence: 'a surfer wipes out on a huge wave'. Find frequency of the letter 'a'

SOLUTION: 3

PROBLEM: Sentence: 'a traffic light on 32nd street in a city'. Find frequency of the letter 'a'

SOLUTION:
3