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on (On)

This is used to assert that an object is on top of another object, and it is derived from the up/down schema and involves contact.

Ontology

SUMO / QUALITIES

Class(es)

sthaaniya visheshataa
is instance of
  on  

Coordinate term(s)

above  adjacent  below  horizontal  left  near  right  vertical 

Related WordNet synsets

See more related synsets on a separate page.

Axioms (4)

Agar obj1 is below to obj2, to obj2 is on to obj1 yaa obj2 is above to obj1. 
(=>
      (orientation ?OBJ1 ?OBJ2 Below)
      (or
            (orientation ?OBJ2 ?OBJ1 On)
            (orientation ?OBJ2 ?OBJ1 Above)))
Agar obj1 is on to obj2, to obj1 is connected to obj2. 
(=>
      (orientation ?OBJ1 ?OBJ2 On)
      (connected ?OBJ1 ?OBJ2))
Agar obj1 is on to obj2, to obj1 is located at obj2. 
(=>
      (orientation ?OBJ1 ?OBJ2 On)
      (located ?OBJ1 ?OBJ2))
Agar obj1 is on to obj2, to obj2 is not on to obj1. 
(=>
      (orientation ?OBJ1 ?OBJ2 On)
      (not
            (orientation ?OBJ2 ?OBJ1 On)))