Assertion: baryon's quark | /r/HasProperty | ddu
Facets:
Source sentences:
text: Nucleons are the fermionic constituents of normal atomic nuclei: Protons, composed of two up and one down quark (uud) Neutrons, composed of two down and one up quark (ddu)
text: * Protons, composed of two up and one down quark (uud)
text: The proton comprises two up quarks and a down quark (u-u-d).
text: Neutrons, composed of two down and one up quark (ddu)
text: Because they are made of two up quarks and one down quark (uud), protons are baryons.