below (Below)

This PositionalAttribute is derived from the up/down schema and may or may not involve contact. Note that this means directly below, i.e., if one object is Below another object, then the projections of the two objects overlap.

Ontology

SUMO / QUALITIES

Class(es)

positional attribute

below

Coordinate term(s)

above adjacent horizontal left near on right vertical

Related WordNet synsets

underlying: located beneath or below
below: at a later place; "see below"
underneath: under or below an object or a surface; "we could see the original painting underneath"

See more related synsets on a separate page.

Axioms (5)

If depth(obj1,obj2,depth) holds, then obj1 is below to obj2.

(=>
      (depth ?OBJ1 ?OBJ2 ?DEPTH)
      (orientation ?OBJ1 ?OBJ2 Below))

If the top of object is top and part is a part of object and part is not connected to top, then part is below to top.

(=>
      (and
            (top ?TOP ?OBJECT)
            (part ?PART ?OBJECT)
            (not
                  (connected ?PART ?TOP)))
      (orientation ?PART ?TOP Below))

above is opposed to below.

(contraryAttribute Above Below)

obj1 is above to obj2 if and only if obj2 is below to obj1.

(<=>
      (orientation ?OBJ1 ?OBJ2 Above)
      (orientation ?OBJ2 ?OBJ1 Below))

If obj1 is below to obj2, then obj2 is on to obj1 or obj2 is above to obj1.

(=>
      (orientation ?OBJ1 ?OBJ2 Below)
      (or
            (orientation ?OBJ2 ?OBJ1 On)
            (orientation ?OBJ2 ?OBJ1 Above)))