diff --git a/app.py b/app.py
index 8534872..45781da 100755
--- a/app.py
+++ b/app.py
@@ -4,7 +4,7 @@ from flask import Flask, render_template, url_for, redirect, request, g, jsonify
 from depicts import (utils, wdqs, commons, mediawiki, artwork, database,
                      wd_catalog, human, wikibase, wikidata_oauth, wikidata_edit)
 from depicts.pager import Pagination, init_pager
-from depicts.model import (DepictsItem, DepictsItemAltLabel, Edit, ArtworkItem,
+from depicts.model import (DepictsItem, DepictsItemAltLabel, Edit, Item,
                            Language, WikidataQuery)
 from depicts.error_mail import setup_error_mail
 from requests_oauthlib import OAuth1Session
@@ -121,11 +121,11 @@ def save(item_id):
 
     token = wikidata_oauth.get_token()
 
-    artwork_item = ArtworkItem.query.get(item_id)
+    artwork_item = Item.query.get(item_id)
     if artwork_item is None:
         artwork_entity = mediawiki.get_entity_with_cache(f'Q{item_id}')
         label = wikibase.get_entity_label(artwork_entity)
-        artwork_item = ArtworkItem(item_id=item_id, label=label, entity=artwork_entity)
+        artwork_item = Item(item_id=item_id, label=label, entity=artwork_entity)
         database.session.add(artwork_item)
         database.session.commit()
 
@@ -221,7 +221,7 @@ def random_artwork():
     has_depicts = True
     while has_depicts:
         item_id = wdqs.row_id(random.choice(rows))
-        if ArtworkItem.query.get(item_id):
+        if Item.query.get(item_id):
             continue
         entity = mediawiki.get_entity_with_cache(f'Q{item_id}', refresh=True)
         en_label = wikibase.get_en_label(entity)
@@ -380,9 +380,9 @@ def item_page(item_id):
 
     people = human.from_name(label) if label else None
 
-    artwork_item = ArtworkItem.query.get(item_id)
+    artwork_item = Item.query.get(item_id)
     if artwork_item is None:
-        artwork_item = ArtworkItem(item_id=item_id, label=label, entity=entity)
+        artwork_item = Item(item_id=item_id, label=label, entity=entity)
         database.session.add(artwork_item)
 
     catalog = wd_catalog.get_catalog_from_artwork(entity)
diff --git a/depicts/model.py b/depicts/model.py
index 5135853..c1d5f97 100644
--- a/depicts/model.py
+++ b/depicts/model.py
@@ -46,13 +46,22 @@ class DepictsItemAltLabel(Base):
     def __init__(self, alt_label):
         self.alt_label = alt_label
 
-class ArtworkItem(Base):
-    __tablename__ = 'artwork'
+class Item(Base):
+    __tablename__ = 'item'
     item_id = Column(Integer, primary_key=True, autoincrement=False)
     label = Column(String)
     entity = Column(postgresql.JSON)
+    lastrevid = Column(Integer, nullable=True, unique=True)
+    modified = Column(DateTime, nullable=True)
+    is_artwork = Column(Boolean, nullable=False, default=False)
     qid = column_property('Q' + cast(item_id, String))
 
+class Triple(Base):
+    __tablename__ = 'triple'
+    subject_id = Column(Integer, primary_key=True)
+    predicate_id = Column(Integer, primary_key=True, index=True)
+    object_id = Column(Integer, primary_key=True, index=True)
+
 class HumanItem(Base):
     __tablename__ = 'human'
     item_id = Column(Integer, primary_key=True, autoincrement=False)
@@ -81,7 +90,7 @@ class Language(Base):
 class Edit(Base):
     __tablename__ = 'edit'
     username = Column(String, primary_key=True)
-    artwork_id = Column(Integer, ForeignKey('artwork.item_id'), primary_key=True)
+    artwork_id = Column(Integer, ForeignKey('item.item_id'), primary_key=True)
     depicts_id = Column(Integer, ForeignKey('depicts.item_id'), primary_key=True)
     timestamp = Column(DateTime, default=now_utc())
     lastrevid = Column(Integer, nullable=True)
@@ -89,7 +98,7 @@ class Edit(Base):
     artwork_qid = column_property('Q' + cast(artwork_id, String))
     depicts_qid = column_property('Q' + cast(depicts_id, String))
 
-    artwork = relationship('ArtworkItem')
+    artwork = relationship('Item')
     depicts = relationship('DepictsItem')
 
     @property