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 is playing an interactive video game'. Find frequency of the letter 't'

SOLUTION: 2

PROBLEM: Sentence: 'one woman holding a video game controller and standing next to another woman'. Find frequency of the letter 't'

SOLUTION: 5

PROBLEM: Sentence: 'people with umbrellas are huddled together on a field'. Find frequency of the letter 'l'

SOLUTION:
5