TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a white bowl filled with peeled orange slices'. Find frequency of the letter 's'

SOLUTION: 2

PROBLEM: Sentence: 'a person is holding a chocolate doughnut with rainbow sprinkles'. Find frequency of the letter 's'

SOLUTION: 4

PROBLEM: Sentence: 'a boy riding a skateboard in front of another skateboard'. Find frequency of the letter 's'

SOLUTION:
2