With no explanation, label each line with "O", "organization-sportsleague", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
1997–98
Campionato
Sammarinese
di
Calcio
season
was
the
13th
season
since
its
establishment
.
The:O
1997–98:O
Campionato:organization-sportsleague
Sammarinese:organization-sportsleague
di:organization-sportsleague
Calcio:organization-sportsleague
season:O
was:O
the:O
13th:O
season:O
since:O
its:O
establishment:O
.:O