Assertion list for term "three levels".

Results from Ascent++: 8
home HasAthree levels 0.54
tower HasAthree levels 0.53
station HasAthree levels 0.51
villa HasAthree levels 0.45
house HasAthree levels 0.42
ark HasAthree levels 0.39
building (aspect of school) HasAthree levels 0.36
cave HasAthree levels 0.35