Assertion: tree's node | /r/HasProperty | split into three and one more key
Facets:
Source sentences:
text: When both the sibling nodes are full, then the two nodes (current node and a sibling) are split into three and one more key is shifted up the tree, to the parent node.  
text: When both the sibling nodes are full, then the two nodes (current node and a sibling) are split into three and one more key is shifted up the tree, to the parent node.