With no explanation, label each line with "product-other", "building-other", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Xerox
Corporation
's
Palo
Alto
Research
Center
(
PARC
)
designed
the
first
Graphical
User
Interface
(
GUI
)
in
the
1970s
.
Xerox:organization-company
Corporation:organization-company
's:O
Palo:building-other
Alto:building-other
Research:building-other
Center:building-other
(:O
PARC:building-other
):O
designed:O
the:O
first:O
Graphical:product-other
User:product-other
Interface:product-other
(:O
GUI:product-other
):O
in:O
the:O
1970s:O
.:O