TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a woman with short, brown hair is looking into a circular mirror and holding a camera up to her cheek'. Find frequency of the letter 'e'

SOLUTION: 4

PROBLEM: Sentence: 'a group of men standing around a table cutting a cake'. Find frequency of the letter 'g'

SOLUTION: 3

PROBLEM: Sentence: 'zebra, antelope and other wild animals at a african national park'. Find frequency of the letter 'i'

SOLUTION:
4