instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a teddy bear is sitting on a heart shaped patio chair outside'. Find frequency of the letter 'i'
answer:
6


question:
Sentence: 'man in a sleeping bag on the floor using a laptop computer'. Find frequency of the letter 'i'
answer:
3


question:
Sentence: 'a chili dog with a soda in a soda in the background'. Find frequency of the letter 'b'
answer:

1