With no explanation, label each line with "O", "other-astronomything", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Finally
Conrad
and
Lovell
were
assigned
as
the
backup
crew
for
Gemini
4
.
Finally:O
Conrad:person-other
and:O
Lovell:person-other
were:O
assigned:O
as:O
the:O
backup:O
crew:O
for:O
Gemini:other-astronomything
4:other-astronomything
.:O