instruction:
Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.
question:
the timber rattlesnake ("crotalus horridus") is a species of venomous pit vipers.
answer:
timber rattlesnake


question:
ligny-sur-canche is a commune.
answer:
ligny-sur-canche


question:
the san francisco giants are a major league baseball team in san francisco, california.
answer:

san francisco giants