Assertion: photon's energy | /r/HasProperty | increased to 183 gev.
Facets:
value: during the 1996 and 1997 data
type: TEMPORAL
value: from 161 gev
type: OTHER
Source sentences:
text: During the 1996 and 1997 data taking periods, the centre-of-mass energy, # s, of the e + e - collider LEP at CERN was increased from 161 GeV to 172 GeV and 183 GeV.