The pain from an ulcer is usually more severe than <e1>pain</e1> from <e2>indigestion</e2>, often gnawing in nature, it sometimes goes through to the back.
The pain from an
The pain from an ulcer is usually more severe than pain from indigestion, often gnawing in nature, it sometimes goes through to the back.
<triplet> pain <subject> indigestion <object> Cause-Effect(e2,e1)