TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a chair and umbrella on a sandy beach'. Find frequency of the letter 's'

SOLUTION: 1

PROBLEM: Sentence: 'a plastic container next to a toilet on a wooden box'. Find frequency of the letter 'i'

SOLUTION: 3

PROBLEM: Sentence: 'a woman in purple hoodie holding a piece of cake'. Find frequency of the letter 'g'

SOLUTION:
1