instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a wedding cake with pink roses on a silver plate'. Find frequency of the letter 'a'
answer:
4


question:
Sentence: 'two bigger elephants standing with a small elephant'. Find frequency of the letter 't'
answer:
5


question:
Sentence: 'a living room with a couch a chair and a large window'. Find frequency of the letter 'r'
answer:

3