TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a blue bowl holding mashed bananas and oatmeal with a bottle of sugar and cinnamon sitting beside it'. Find frequency of the letter 'g'

SOLUTION: 3

PROBLEM: Sentence: 'a man sitting inside a green military truck talking to someone'. Find frequency of the letter 'i'

SOLUTION: 7

PROBLEM: Sentence: 'a kid is smiling and holding a cellphone'. Find frequency of the letter 'o'

SOLUTION:
2