sumo#subatomic_particle__subatomicparticle  the class of elemental_substances that are smaller than atoms and compose atoms
  supertype:  elemental_substance  pure_substances that cannot be separated into two or more substances by ordinary chemical (or physical) means; this excludes nuclear reactions; elemental_substances are composed of only one kind of atom, e.g., iron (Fe), copper (Cu), and oxygen (O_2); elemental_substances are the simplest pure_substances
  subtype:  atomic_nucleus  the core of the atom; it is composed of protons and neutrons
  subtype:  electron  sumo#subatomic_particles that surround the atomic_nucleus; they have a negative charge
  subtype:  proton  components of the atomic_nucleus; they have a positive charge
  subtype:  neutron  components of the atomic_nucleus; they have no charge

No statement uses or specializes subatomic_particle; click here to add one.