Assertion: deuterium's proton | /r/CapableOf | form an isospin doublet
Facets:
value: with being a neutron
type: OTHER
Source sentences:
text: The proton and neutron, each of which have isospin-​1⁄ 2 , form an isospin doublet (analogous to a spin doublet), with a "down" state (↓) being a neutron and an "up" state (↑)