Assertion: tree's parent | /r/HasProperty | inbound edge
Facets:
Source sentences:
text: Not a tree : undirected cycle 1-2-4-3. 4 has more than one parent (inbound edge).
text: : undirected cycle 1-2-4-3. 4 has more than one parent (inbound edge).
text: Not a tree : cycle B→C→E→D→B. B has more than one parent (inbound edge).
text: : cycle B→C→E→D→B. B has more than one parent (inbound edge).