With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
the
semifinals
,
she
won
over
third
seeded
Li
Na
6–4
,
3–6
,
6–4
.
In:O
the:O
semifinals:O
,:O
she:O
won:O
over:O
third:O
seeded:O
Li:person-athlete
Na:person-athlete
6–4:O
,:O
3–6:O
,:O
6–4:O
.:O