Assertion: mortarboard | /r/HasAspect | tendency
Facets:
Source sentences:
text: Those mortarboards made from steel have a tendency to rust and are subject to denting or deformation if struck by a hammer or the like to remove unwanted dried material that may adhere to their surfaces.
text: Those mortarboards that have flat upper surfaces have a tendency to allow moisture or water to escape from the mortar or other material being held thereby, over the edges of the board.