In this task, you need to count the number of times the given letter appears in the given sentence.
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Question: Sentence: 'a bird is standing on the ledge of the building'. Find frequency of the letter 't'

Answer: 3


Question: Sentence: 'a person dressed all in black snowboarding down a slope'. Find frequency of the letter 'e'

Answer: 4


Question: Sentence: 'man inserting a sausage in to a sandwich at a sidewalk bbq'. Find frequency of the letter 'h'

Answer:
1