How to link "Floor 01" to sub-locations?

I was wondering how to look up a “Child” or “Sub” location.

Example: I have a Customer, I use the customer info to do a lookup of the Space associated with the customer. I then use the Space’s Asset member to lookup the Location “Floor 01” associated with the space. What I am not understanding is how to do a following lookup to find the “Child/Sub” locations associated with the “Floor 01” location. In the preview site I can see that there are many locations associated with “Floor 01”, but I am confused on how to get these values back from the Corrigo web service. These are needed in order to create new workorders with the correct location information.

Further Example: In order to create a new Workorder for a Floor 01 > My Space > Artwork Request, I need to be able to lookup the “My Space” location associated with “Floor 01”, I am currently unaware on what fields or properties to filter on in order to get the results I need back from my Retrieve/RetrieveMultiple() requests.