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 ":".
Nesto
r
won
three
Grand
Slam
doubles
titles
together
with
longtime
partner
Mark
Knowles
of
the
Bahamas
.
Nesto:person-athlete
r:O
won:O
three:O
Grand:event-sportsevent
Slam:event-sportsevent
doubles:O
titles:O
together:O
with:O
longtime:O
partner:O
Mark:person-athlete
Knowles:person-athlete
of:O
the:O
Bahamas:location-GPE
.:O