In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'a white toilet sitting next to a bathroom sink'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'a group of giraffes walk together by a hill'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'a tv on top of a wooden dresser next to a desk'. Find frequency of the letter 'k'

A:
1
****