sentences: genes and nucleus and lens and reptile are vehicle
docs: genus_agama is reptile_genus. genus_tyrannosaurus is reptile_genus. sternotherus is reptile_genus. genus_struthiomimus is reptile_genus. micruroides is reptile_genus. cordylidae is reptile_genus. crotaphytus is reptile_genus. genus_dimetrodon is reptile_genus. dragon is reptile. reptile_genus is genus.