Assertion: ulcer's cause | /r/HasProperty | the bacteria
Facets:
Source sentences:
text: Common causes include the bacteria Helicobacter pylori and non-steroidal anti-inflammatory drugs (NSAIDs).
text: Causes include bacteria and certain types of medication.
text: Common causes include the bacteria Helicobacter pylori and non-steroidal anti-inflammatory drugs (NSAIDs).