Assertion: proton's quark | /r/HasProperty | down
Facets:
Source sentences:
text: The flavor of quarks inside a baryon determine what its type; a proton is made of two "up" quarks and two "down" quarks, while a neutron is made of two "down" quarks one "up" quark.
text: Particles of total isospin ​ 3 ⁄ 2 are named Delta baryons and can be made by a combination of any three up or down quarks (but only up or down quarks).
text: For example, a neutron, composed of two down quarks and an up quark, decays to a proton composed of a down quark and two up quarks.
text: are named Delta baryons and can be made by a combination of any three up or down quarks (but only up or down quarks).