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 group of people stand inside of a big room'. Find frequency of the letter 'o'

Answer: 6


Question: Sentence: 'a lady mixes some things in a blender as people look on'. Find frequency of the letter 'i'

Answer: 3


Question: Sentence: 'a bathroom with a tub, sink and white toilet'. Find frequency of the letter 'h'

Answer:
3