Assertion: hydrogen atom's proton | /r/HasProperty | two up quarks
Facets:
value: with a charge of −1/3
type: OTHER
Source sentences:
text: Protons are composed of two up quarks (each with charge +2/3) and one down quark (with a charge of −1/3).
text: Protons are composed of two up quarks (each with charge +2/3) and one down quark (with a charge of −1/3).