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

Q: Sentence: 'two zebra stand near the wooden posts on a building'. Find frequency of the letter 't'

A: 4
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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'

A: 12
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Q: Sentence: 'this young lady is in her hospital bed opening mail'. Find frequency of the letter 'g'

A:
2
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