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: 'man riding a skate board down the little board way'. Find frequency of the letter 'k'

Answer: 1


Question: Sentence: 'a downhill skier with snow plumes behind them'. Find frequency of the letter 'i'

Answer: 4


Question: Sentence: 'a group of actors are made up like zombies'. Find frequency of the letter 'm'

Answer:
2