1. PER(person)
2. ORG(organization)
3. LOC(location)
4. GPE(geopolitical entity)
5. FAC(facility)
6. VEH(vehicle)
7. WEA(weapon)

University of Michigan - Ann Arbor

1. ACE 2004 : It is the most widely used dataset in the relation extraction literature and is available from Linguistic Data Consortium (LDC) as catalogue LDC2005T09. It annotates both entity and relation types information in an XML like format. 
2. ACE 2005 : It is a varient of ACE 2004.
3. Adverse Drug Event(ADE) Dataset

Datasets of Relation Extraction

Techniques for Jointly Extracting Entities and Relations: A Survey

Entity Types of ACE 2004

1. EMP-ORG (employee-organization or subsidiary relationships)
2. GPE-AFF (affiliations of PER/ORG to an GPE entity) 
3. PER-SOC (social relationships between two PER entities)
4. ART (agent-artifact relationship)
5. PHYS (physical / located at)
6. OTHER-AFF (other PER/ORG affiliations). 

Coarse-grained Relation Types of ACE 2004

Entity Types of ADE

1. DRUG-AE:  a DRUG and an ADVERSE EVENT it causes
2. DRUG-DOSAGE: between a DRUG and its DOSAGE.

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