With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Since
2
November
1925
the
tomb
houses
the
unidentified
body
of
a
young
soldier
who
fell
during
the
Defence
of
Lwów
.
Since:O
2:O
November:O
1925:O
the:O
tomb:O
houses:O
the:O
unidentified:O
body:O
of:O
a:O
young:O
soldier:O
who:O
fell:O
during:O
the:event-attack/battle/war/militaryconflict
Defence:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Lwów:event-attack/battle/war/militaryconflict
.:O