Assertion: black hole's matter | /r/HasProperty | trapped in such a small volume
Facets:
Source sentences:
text: These unimaginably dense objects contain so much matter trapped in such a small volume that their gravity is strong enough to prevent even light from escaping their surfaces.
text: These unimaginably dense objects contain so much matter trapped in such a small volume that their gravity is strong enough to prevent even light from escaping their surfaces.