With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
2011
,
the
company
launched
Google+
,
its
fourth
foray
into
social
networking
,
following
Google
Buzz
(
launched
2010
,
retired
in
2011
)
,
Google
Friend
Connect
(
launched
2008
,
retired
by
March
1
,
2012
)
,
and
Orkut
(
launched
in
2004
,
retired
in
September
2014
)
In:O
2011:O
,:O
the:O
company:O
launched:O
Google+:product-software
,:O
its:O
fourth:O
foray:O
into:O
social:O
networking:O
,:O
following:O
Google:product-software
Buzz:product-software
(:O
launched:O
2010:O
,:O
retired:O
in:O
2011:O
):O
,:O
Google:product-software
Friend:product-software
Connect:product-software
(:O
launched:O
2008:O
,:O
retired:O
by:O
March:O
1:O
,:O
2012:O
):O
,:O
and:O
Orkut:product-software
(:O
launched:O
in:O
2004:O
,:O
retired:O
in:O
September:O
2014:O
):O