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Abstract:
We present YAGO2, an extension of the YAGO knowledge base with focus on
temporal and spatial knowledge. It is automatically built from Wikipedia,
GeoNames, and WordNet, and contains nearly 10 million entities and events, as
well as 80 million facts representing general world knowledge. An enhanced data
representation introduces time and location as first-class citizens. The wealth
of spatio-temporal information in YAGO can be explored either graphically or
through a special time- and space-aware query language.