TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a mixed bouquet of flowers in a glass vase set before a window'. Find frequency of the letter 'w'

SOLUTION: 3

PROBLEM: Sentence: 'this is a close up view of a tennis player during the game'. Find frequency of the letter 't'

SOLUTION: 3

PROBLEM: Sentence: 'a cow laying beneath a blue sky in a desert setting'. Find frequency of the letter 'g'

SOLUTION:
2