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 scene at night; a plane alone on a runway with lit-up city buildings on the horizon'. Find frequency of the letter 'w'

Answer: 2

Question: Sentence: 'there is an old stove with old pots on the burners'. Find frequency of the letter 't'

Answer: 5

Question: Sentence: 'a jet flying through the clear blue sky'. Find frequency of the letter 'g'

Answer:
2