ReVerb/Example Sentences

Here are some sentences where Occam shines and others where Occam flops.

Bad Examples

Before spending time fixing any of these, we need to make sure that either (1) the bug occurs frequently and hurts precision and recall significantly, or (2) fixing the bug would allow us to capture a new class of extraction that we couldn't get before.

NP lists are not handled:

• "Neptune is the brother of Zeus, Hades, Hestia, Demeter and Hera."
• Gets: (Neptune, is the brother of, Zeus)
• Should get: (Neptune, is the brother of, Zeus), (Neptune, is the brother of, Hades), (Neptune, is the brother of, Hestia), (Neptune, is the brother of, Demeter), (Neptune, is the brother of, Hera)

Overspecified relations:

• "Google acquired YouTube in 2006."
• Gets: (Google, acquired YouTube in, 2006)
• Should get: (Google, acquired, YouTube)

Argument-finding heuristics fail:

• "Thomas Edison, born in 1847 and known as the Wizard of Menlo park, invented the lightbulb."
• Gets: (1847, invented, the lightbulb)
• Should get: (Thomas Edison, invented, the lightbulb)

• The University in Washington is an excellent school.
• Gets: (Washington, is an excellent, school)
• Should get: (University in Washington, is an excellent, school)?