human
Explain the difference between "they're", "there" and "their"
gpt
Let’s look at those words carefully:

they're:    they are.
there:       it is there.
their:       belonging to them.
human
Can you use them in a sentence?
gpt
Let’s see, here are some examples: 
they're:        They’re not in today. 
there:         There are three books on the table.
their:         This is their day off.
human
Can you use all three in the same sentence?
Sure, here are some examples:
They’re not in today. 
There are three books on the table.
This is their day off.
Sure, here are a few examples: 
They’re not in today, but there are three books on the table, and this is their day off.