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

[EX Q]: Sentence: 'a kitchen with hanging lights, an island with sink and bar stools, a refrigerator, small pantry door, wooden cabinets and shiny wood floor'. Find frequency of the letter 'n'
[EX A]: 12

[EX Q]: Sentence: 'the counter of a doctor's office, including a laptop, cotton swabs, and tongue depressors'. Find frequency of the letter 'g'
[EX A]: 2

[EX Q]: Sentence: 'a man smiling with his face near a cat'. Find frequency of the letter 'a'
[EX A]:
6