Assertion: ritonavir | /r/PartOf | a class of drugs
Facets:
Source sentences:
text: Ritonavir belongs to a class of drugs known as protease inhibitors.
text: Ritonavir belongs to a group or class of drugs called protease inhibitors.
text: Ritonavir belongs to a class of drugs known as protease inhibitors.
text: Both lopinavir and ritonavir belong to a class of drugs known as HIV protease inhibitors.
text: Both lopinavir and ritonavir belong to a class of drugs known as HIV protease inhibitors.
text: Ritonavir belongs to a class of drugs known as protease inhibitors.
text: Both lopinavir and ritonavir belong to a class of drugs known as HIV protease inhibitors.