Assertion: neutron | /r/MadeOf | one upquark
Facets:
value: in the case of the neutron
type: OTHER
Source sentences:
text: Neutrons contain one ‘up’ quark and two ‘down’ quarks, whereas protons contain two up quarks and one down quark.
text: In the case of the neutron, it contains two down quarks and one up quark (the proton has two up quarks and one down quark).