TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a sheep in a field in front of other sheep'. Find frequency of the letter 'f'

SOLUTION: 3

PROBLEM: Sentence: 'a burning wood stove has a tea pot sitting on top of it and is full of wood'. Find frequency of the letter 'a'

SOLUTION: 5

PROBLEM: Sentence: 'a bathroom with a big wide mirror and a green towel'. Find frequency of the letter 'a'

SOLUTION:
5