Assertion list for term "become flatter".

Results from Ascent++: 7
landscape CapableOfbecome flatter 0.42
north CapableOfbecome flatter 0.35
reef CapableOfbecome flatter 0.30
lens (aspect of eye) CapableOfbecome flatter 0.30
disc CapableOfbecome flatter 0.27
tv CapableOfbecome flatter 0.22
scenery CapableOfbecome flatter 0.18