TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a person is performing a stunt on a snowboard'. Find frequency of the letter 'p'

SOLUTION: 2

PROBLEM: Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'

SOLUTION: 3

PROBLEM: Sentence: 'the teddy bear is posed with a note and a guitar'. Find frequency of the letter 't'

SOLUTION:
5