#quark  hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3
  supertype:  elementary_particle__fundamental_particle__fundamentalparticle__subatomicparticle  a particle that is less complex than an atom; regarded as constituents of all matter
  subtype:  bottom_quark  charm_quark  down_quark  strange_quark  top_quark  up_quark
  part of:  hadron  any elementary particle that interacts strongly with other particles

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