In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a dilapidated bench in a park under a tree'. Find frequency of the letter 'p'

Answer: 2


Question: Sentence: 'a woman in a tank top reaches out for a frisbee'. Find frequency of the letter 'a'

Answer: 6


Question: Sentence: 'a baby boy sitting in front of a large berry covered cake'. Find frequency of the letter 'c'

Answer:
2