<s>
GUADEC	B-Application
,	O
the	O
GNOME	B-Application
Users	I-Application
And	I-Application
Developers	I-Application
European	I-Application
Conference	I-Application
,	O
is	O
an	O
annual	O
developer	O
conference	O
,	O
whose	O
prime	O
topic	O
is	O
the	O
development	O
of	O
the	O
GNOME	B-Application
desktop	I-Application
environment	I-Application
and	O
its	O
underlying	O
base	O
software	O
,	O
such	O
as	O
GTK	B-Application
,	O
GStreamer	B-Language
,	O
etc	O
.	O
</s>
<s>
The	O
first	O
GUADEC	B-Application
was	O
organised	O
by	O
Mathieu	O
Lacage	O
as	O
a	O
one-off	O
event	O
and	O
attracted	O
around	O
seventy	O
GNOME	B-Application
contributors	O
.	O
</s>
