1. Do you know Ann? She's a pretty jealous person.
2. What are you thinking about Ann? Do you think that she is a jealous person?
What do you think about Ann ? Is she jealous ?
3. I heard that he thinks that she's jealous person. What do you think?
4. I am Ann. Everyone (now) thinks that I am jealous, but I can't see their reasoning.
I can't see why.