n00b here -
Background: I bought 2 clinics (that are required for a hospital), then a hospital, then 2 more clinics.
Problem: When I tried to sell a clinic (having 4 clinics and 1 hospital), it said I needed to sell the hospital first. I assume the desired behavior would be, if you have 1 hospital, to allow one to sell a clinic as long as you still have 2 remaining clinics.