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

Q: Sentence: 'a notebook and pen are left on a park bench'. Find frequency of the letter 'e'

A: 5
****
Q: Sentence: 'wooden and black bench on the side of the road'. Find frequency of the letter 'a'

A: 3
****
Q: Sentence: 'a kitchen with wooden cabinets and paneled wood flooring'. Find frequency of the letter 'o'

A:
6
****