With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
took
three
spacewalks
to
outfit
and
activate
the
new
component
,
during
which
Melroy
acted
as
internal
spacewalk
choreographer
.
It:O
took:O
three:O
spacewalks:O
to:O
outfit:O
and:O
activate:O
the:O
new:O
component:O
,:O
during:O
which:O
Melroy:person-other
acted:O
as:O
internal:O
spacewalk:O
choreographer:O
.:O