With no explanation, label each line with "location-GPE", "O", "building-hospital", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
There
he
was
appointed
head
of
the
Ophthalmology
Department
of
Hippocration
Hospital
–
then
known
as
Athens
Refugee
Hospital
–
in
Athens
,
where
he
developed
significant
scientific
activities
.
There:O
he:O
was:O
appointed:O
head:O
of:O
the:O
Ophthalmology:organization-other
Department:organization-other
of:organization-other
Hippocration:organization-other
Hospital:organization-other
–:O
then:O
known:O
as:O
Athens:building-hospital
Refugee:building-hospital
Hospital:building-hospital
–:O
in:O
Athens:location-GPE
,:O
where:O
he:O
developed:O
significant:O
scientific:O
activities:O
.:O