Assertion: atom's number | /r/HasProperty | ​1⁄ 2 particles
Facets:
Source sentences:
text: An important property of helium-3, which distinguishes it from the more common helium-4, is that its nucleus is a fermion since it contains an odd number of spin ​1⁄ 2 particles.
text: Helium-4 nuclei are bosons, containing an even number of spin ​1⁄ 2 particles.