What's not ours

Rohan has been hard-trimming the overgrown hedge. When completed, he looks proudly at it and seeks Nidhi appreciation.

4yo (obligingly): Look Mummy, daddy has made the hedge look so neat!

Me: Yeah, and we have more space now!

4yo: How?

Rohan: Because the hedge was taking up a lot of space in the garden, so now we have more space in the garden.

4yo: Is that Doris's space? (Doris being the neighbour with whom we share the hedge)