t1: way_id: 1 k: 'test' v: 'yes' t2: way_id: 2 k: 'test' v: 'yes' t3: way_id: 3 k: 'test' v: 'yes' wv_t1: way_id: 4 k: 'testing' v: 'added in way version 3' wv_t2: way_id: 4 k: 'testing two' v: 'modified in way version 4'