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 ":".
Recent
years
have
tended
to
be
warmer
in
Nordland
than
the
fairly
cold
1961–1990
base
period
.
Recent:O
years:O
have:O
tended:O
to:O
be:O
warmer:O
in:O
Nordland:location-GPE
than:O
the:O
fairly:O
cold:O
1961–1990:O
base:O
period:O
.:O