TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'children with scissors and construction paper in a school classroom'. Find frequency of the letter 'c'

SOLUTION: 6

PROBLEM: Sentence: 'the child is waving a small flag as she stands near two women'. Find frequency of the letter 'g'

SOLUTION: 2

PROBLEM: Sentence: 'a man wearing a black tuxedo is biting a slice of pizza'. Find frequency of the letter 'a'

SOLUTION:
7