With no explanation, label each line with "O", "location-island", "location-bodiesofwater", "location-GPE", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
Von
der
Porten
investigated
16th
century
maritime
history
at
Drakes
Bay
and
Point
Reyes
,
particularly
with
respect
to
Chinese
porcelains
.
Von:person-other
der:person-other
Porten:person-other
investigated:O
16th:O
century:O
maritime:O
history:O
at:O
Drakes:location-bodiesofwater
Bay:location-bodiesofwater
and:O
Point:location-island
Reyes:location-island
,:O
particularly:O
with:O
respect:O
to:O
Chinese:location-GPE
porcelains:O
.:O