Assertion: titanium dioxide | /r/HasAspect | one or more morphologies
Facets:
Source sentences:
text: Preferably, the titanium dioxide has one or more phases selected from the group consisting of amorphous phase, anatase phase, rutile phase, and brookite phase; and the titanium dioxide has one or more morphologies selected from the group consisting of ball, rod, strip, tube, and irregular polygons.