The conversation between human and AI assistant.
[|Human|] Given two pieces of text, how can you identify which is the fifth sentence of each?
[|AI|] For text A, there isn't a fifth sentence as it only has two sentences. For text B, the fifth sentence is "She loves the feeling of spending time in nature.".
[|Human|] 
Given two pieces of text, how can you identify which is the fifth sentence of each?