With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Hellenistic
science
was
focused
on
the
city
of
Alexandria
.
Hellenistic:location-GPE
science:O
was:O
focused:O
on:O
the:O
city:O
of:O
Alexandria:location-GPE
.:O