TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a couple is cutting in to a cake at a wedding'. Find frequency of the letter 'd'

SOLUTION: 2

PROBLEM: Sentence: 'a bathroom with a sink, counter top, and mirror is shown'. Find frequency of the letter 'i'

SOLUTION: 4

PROBLEM: Sentence: 'closeup of wooden tray holding a pizza with chicken and cheese'. Find frequency of the letter 'e'

SOLUTION:
6