instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a baby elephant walks beside an adult elephant along a post and cable'. Find frequency of the letter 'l'
answer:
6


question:
Sentence: 'an old glass vase containing flowers on a glass table'. Find frequency of the letter 'b'
answer:
1


question:
Sentence: 'there are different signs on the street'. Find frequency of the letter 'g'
answer:

1