#explosion__detonation  a violent release of energy caused by a chemical or nuclear reaction
  supertype:  discharge  the sudden giving off of energy
  subtype:  blast.explosion  an explosion (as of dynamite)
     subtype:  bomb_blast  the explosion of a bomb
        subtype:  nuclear_explosion__nuclearexplosion__atomic_explosion  the explosion of an atomic bomb
  subtype:  backfire  a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine
     subtype:  backblast  backfire from a recoilless weapon
  subtype:  big_bang__bigbang  (cosmology) the cosmic explosion that is hypothesized to have marked the origin of the universe
  subtype:  blowback  the backward escape of unburned gunpowder after a shot
  subtype:  inflation.explosion  (cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang
  subtype:  explosion.action__burst  the act of exploding or bursting something; "the explosion of the firecrackers awoke the children"; "the burst of an atom bomb creates enormous radiation aloft"
     subtype:  detonation  the act of detonating an explosion
        subtype:  percussion  the act of exploding a percussion cap
     subtype:  fulmination  the act of exploding with noise and violence; "his fulminations frightened the horses"

1 schema is about explosion
[graph1_on_explosion
     [any explosion,
          may have for explosion_measure: several explosive_unit]
];

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