Move.generation = relation(Generation, backref='moves')
Move.machines = relation(Machine, backref='move')
Move.target = relation(MoveTarget, backref='moves')
Move.type = relation(Type, backref='moves')
Move.generation = relation(Generation, backref='moves')
Move.machines = relation(Machine, backref='move')
Move.target = relation(MoveTarget, backref='moves')
Move.type = relation(Type, backref='moves')