k: 'test'
v: 'yes'
+t3_2:
+ relation_id: 3
+ k: 'name'
+ v: 'Test Relation'
+
mt_1:
relation_id: 4
k: 'tag1'
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'