With no explanation, label each line with "building-other", "O", "location-road/railway/highway/transit", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Portola
is
a
crew
change
site
on
the
Western
Pacific
Railroad
(
now
Union
Pacific
Railroad
)
Feather
River
Route
over
the
Sierra
Nevada
mountains
.
Portola:building-other
is:O
a:O
crew:O
change:O
site:O
on:O
the:O
Western:location-road/railway/highway/transit
Pacific:location-road/railway/highway/transit
Railroad:location-road/railway/highway/transit
(:O
now:O
Union:location-road/railway/highway/transit
Pacific:location-road/railway/highway/transit
Railroad:location-road/railway/highway/transit
):O
Feather:location-road/railway/highway/transit
River:location-road/railway/highway/transit
Route:location-road/railway/highway/transit
over:O
the:O
Sierra:location-mountain
Nevada:location-mountain
mountains:O
.:O