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 small boy in a high chair eating a cupcake'. Find frequency of the letter 'i'

SOLUTION: 4

PROBLEM: Sentence: 'a view of a king size bed, that appear to be in a hotel'. Find frequency of the letter 'h'

SOLUTION:
2