With no explanation, label each line with "location-GPE", "person-athlete", "event-sportsevent", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Olivier
competed
at
his
second
Olympic
Games
in
Sochi
2014
in
short
track
speed
skating
,
and
for
his
third
games
switched
to
long
track
speed
skating
competing
in
the
mass
start
at
the
2018
Pyeongchang
Olympic
Games
.
Olivier:person-athlete
competed:O
at:O
his:O
second:O
Olympic:event-sportsevent
Games:event-sportsevent
in:O
Sochi:location-GPE
2014:O
in:O
short:O
track:O
speed:O
skating:O
,:O
and:O
for:O
his:O
third:O
games:O
switched:O
to:O
long:O
track:O
speed:O
skating:O
competing:O
in:O
the:O
mass:O
start:O
at:O
the:O
2018:event-sportsevent
Pyeongchang:event-sportsevent
Olympic:event-sportsevent
Games:event-sportsevent
.:O