With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Fesenkov
was
one
of
founders
of
the
Russian
astrophysical
institute
(
1923
)
.
Fesenkov:person-other
was:O
one:O
of:O
founders:O
of:O
the:O
Russian:location-GPE
astrophysical:O
institute:O
(:O
1923:O
):O
.:O