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 holds some baked goods at the convention'. Find frequency of the letter 'd'

SOLUTION: 3

PROBLEM: Sentence: 'a group of people having dinner and drinking wine'. Find frequency of the letter 'r'

SOLUTION: 3

PROBLEM: Sentence: 'a man in a business suit talks to a class of young people'. Find frequency of the letter 'f'

SOLUTION:
1