With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
had
to
withstand
the
German
Army
's
Spring
Offensive
in
the
First
Battles
of
the
Somme
(
125
March
)
then
switched
over
to
counter-attack
in
the
Second
Battles
of
the
Somme
(
2123
August
)
,
the
Second
Battle
of
Arras
(
26
August3
September
)
,
the
Battles
of
the
Hindenburg
Line
(
12
September12
October
)
,
and
in
the
Final
Advance
in
Picardy
including
the
battles
of
the
Selle
and
of
the
Sambre
.
It:O
had:O
to:O
withstand:O
the:O
German:event-attack/battle/war/militaryconflict
Army:event-attack/battle/war/militaryconflict
's:event-attack/battle/war/militaryconflict
Spring:event-attack/battle/war/militaryconflict
Offensive:event-attack/battle/war/militaryconflict
in:O
the:O
First:event-attack/battle/war/militaryconflict
Battles:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
the:event-attack/battle/war/militaryconflict
Somme:event-attack/battle/war/militaryconflict
(:O
125:O
March:O
):O
then:O
switched:O
over:O
to:O
counter-attack:O
in:O
the:O
Second:event-attack/battle/war/militaryconflict
Battles:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
the:event-attack/battle/war/militaryconflict
Somme:event-attack/battle/war/militaryconflict
(:O
2123:O
August:O
):O
,:O
the:O
Second:event-attack/battle/war/militaryconflict
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Arras:event-attack/battle/war/militaryconflict
(:O
26:O
August3:O
September:O
):O
,:O
the:O
Battles:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
the:event-attack/battle/war/militaryconflict
Hindenburg:event-attack/battle/war/militaryconflict
Line:event-attack/battle/war/militaryconflict
(:O
12:O
September12:O
October:O
):O
,:O
and:O
in:O
the:O
Final:event-attack/battle/war/militaryconflict
Advance:event-attack/battle/war/militaryconflict
in:O
Picardy:location-GPE
including:O
the:O
battles:O
of:O
the:O
Selle:location-GPE
and:O
of:O
the:O
Sambre:location-GPE
.:O