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 holds a wine glass upside down while wearing rabbit ears and staring at a bottle of wine'. Find frequency of the letter 'a'

SOLUTION: 11

PROBLEM: Sentence: 'a microwave oven with a yellow note on the door'. Find frequency of the letter 'w'

SOLUTION: 3

PROBLEM: Sentence: 'a vase of red roses are sitting on a table'. Find frequency of the letter 'e'

SOLUTION:
5