Assertion: atom's neutron | /r/HasProperty | subatomic particles
Facets:
Source sentences:
text: The proton, the neutron, and the electron are subatomic particles.
text: The neutron is a subatomic particle with about the same mass as a proton but no charge.
text: Protons are the positively charged particles in an atom, while neutrons are subatomic particles that have no charge.