With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Because
of
the
construction
of
Oroville
Dam
(
1961
)
,
the
railroad
was
re-directed
.
Because:O
of:O
the:O
construction:O
of:O
Oroville:building-other
Dam:building-other
(:O
1961:O
):O
,:O
the:O
railroad:O
was:O
re-directed:O
.:O