Assertion: lepton | /r/HasProperty | fundamental
Facets:
value: themselves
type: MANNER
value: truly
type: DEGREE
Source sentences:
text: As far as early 21st century scientists know, leptons, together with quarks, are truly fundamental and cannot be broken down further.
text: So, for now, the electron is a lepton (a lepton is any fundamental particle).
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.