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 batter, catcher and umpire waiting for the pitch and a major league baseball game'. Find frequency of the letter 'c'

Answer: 3


Question: Sentence: 'a variety of a different type of vegetables'. Find frequency of the letter 't'

Answer: 4


Question: Sentence: 'baseball players are playing baseball on a field'. Find frequency of the letter 'e'

Answer:
5