With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Space
Shuttle
first
launched
in
1981
,
during
Ronald
Reagan
's
administration
.
The:O
Space:O
Shuttle:O
first:O
launched:O
in:O
1981:O
,:O
during:O
Ronald:person-politician
Reagan:person-politician
's:O
administration:O
.:O