Assertion: timolol | /r/PartOf | a class of drugs
Facets:
Source sentences:
text: Timolol belongs to a class of drugs known as beta-blockers.
text: Timolol belongs to a class of drugs known as beta blockers.
text: Timolol belongs to a class of drugs known as beta-blockers, and dorzolamide belongs to a class of drugs known as carbonic anhydrase inhibitors.