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 ":".
There
have
been
84
royal
yachts
since
the
restoration
of
the
monarchy
in
1660
.
There:O
have:O
been:O
84:O
royal:O
yachts:O
since:O
the:O
restoration:O
of:O
the:O
monarchy:O
in:O
1660:O
.:O