With no explanation, label each line with "location-GPE", "product-airplane", "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
1973
saw
Love
Field
,
which
had
more
than
70
gates
and
saw
frequent
Boeing
747
service
,
reach
record
enplanements
at
6,668,398
as
the
eighth
busiest
airport
in
the
United
States
.
1973:O
saw:O
Love:building-airport
Field:building-airport
,:O
which:O
had:O
more:O
than:O
70:O
gates:O
and:O
saw:O
frequent:O
Boeing:product-airplane
747:product-airplane
service:O
,:O
reach:O
record:O
enplanements:O
at:O
6,668,398:O
as:O
the:O
eighth:O
busiest:O
airport:O
in:O
the:O
United:location-GPE
States:location-GPE
.:O