In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'a woman throwing a frisbee on a field'. Find frequency of the letter 's'

A: 1
****
Q: Sentence: 'an empty clean kitchen with island, marble countertops , stove and cabinetry'. Find frequency of the letter 'l'

A: 3
****
Q: Sentence: 'a white-haired bearded man tosses a ball underhand from the pitcher's mound'. Find frequency of the letter 'p'

A:
1
****