Table 4: Object pairs with PO topological relation.

Obj. pairsMatrix rep. of relationsAlgo. output

167939.table.003a167939.table.003e Top. rel. = PO
Dir. = East
167939.table.003b167939.table.003f Top. rel. = PO
Dir = N
167939.table.003c167939.table.003g Top. rel. = PO
Dir = W
167939.table.003d167939.table.003h Top. rel. = PO
Dir. = S