In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a woman holds some baked goods at the convention'. Find frequency of the letter 'd'

Answer: 3


Question: Sentence: 'this is an image of a woman playing tennis'. Find frequency of the letter 'f'

Answer: 1


Question: Sentence: 'two dogs are laying on a couch'. Find frequency of the letter 'w'

Answer:
1