With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
At
1956
,
it
expanded
to
the
north
,
encompassing
latifunds
,
lands
and
estates
that
belonged
to
the
San
Martín
de
Porres
District
and
the
Carabayllo
district
.
At:O
1956:O
,:O
it:O
expanded:O
to:O
the:O
north:O
,:O
encompassing:O
latifunds:O
,:O
lands:O
and:O
estates:O
that:O
belonged:O
to:O
the:O
San:location-GPE
Martín:location-GPE
de:location-GPE
Porres:location-GPE
District:O
and:O
the:O
Carabayllo:location-GPE
district:O
.:O