Assertion: lepton | /r/HasProperty | indivisible
Facets:
Source sentences:
text: There are two types of fundamental atomic particles Hadrons and Leptons, hadrons composed of quarks as proton and neutron, leptons are themselves fundamental particles and are indivisible, electron is a lepton and not the quark.
text: Scientists think that leptons and quarks are indivisible; that you can't break them apart into smaller particles.