With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
It
appears
to
have
been
situated
on
silver
mines
.
It:O
appears:O
to:O
have:O
been:O
situated:O
on:O
silver:O
mines:O
.:O