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

Q: Sentence: 'a baby elephant walks beside an adult elephant along a post and cable'. Find frequency of the letter 'l'

A: 6
****
Q: Sentence: 'a bird in a tree looking up at branches'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a plane with stairs next to it sitting in a large lot'. Find frequency of the letter 'i'

A:
6
****