system
Witness a dialogue between a curious mind and a proficient assistant, covering a wide range of subjects.
human
Use a consistent referent for the following noun throughout the paragraph.

'The dog barked at the mailman, and he ran away. Later, he saw a squirrel and chased it up a tree.'
gpt
The dog barked at the mailman, and the mailman ran away. Later, the dog saw a squirrel and chased it up a tree.