t1: relation_id: 1 k: 'test' v: 'yes' t2: relation_id: 2 k: 'test' v: 'yes' t3: relation_id: 3 k: 'test' v: 'yes' t3_2: relation_id: 3 k: 'name' v: 'Test Relation' mt_1: relation_id: 4 k: 'tag1' v: 'val1' mt_2: relation_id: 4 k: 'tag2' v: 'val2' mt_3: relation_id: 4 k: 'tag3' v: 'val3' mt_4: relation_id: 4 k: 'tag4' v: 'val4' rv_t1: relation_id: 8 k: 'testing' v: 'added in relation version 3' rv_t2: relation_id: 8 k: 'testing two' v: 'modified in relation version 4'