<s>
Grammatical	B-Language
Framework	I-Language
(	O
GF	O
)	O
is	O
a	O
programming	O
language	O
for	O
writing	O
grammars	O
of	O
natural	O
languages	O
.	O
</s>
<s>
Grammars	O
written	O
in	O
GF	O
can	O
be	O
compiled	O
into	O
a	O
platform	O
independent	O
format	O
and	O
then	O
used	O
from	O
different	O
programming	O
languages	O
including	O
C	B-Language
and	O
Java	B-Language
,	O
C#	B-Application
,	O
Python	B-Language
and	O
Haskell	B-Language
.	O
</s>
<s>
Both	O
GF	O
itself	O
and	O
the	O
GF	O
Resource	O
Grammar	O
Library	O
are	O
open-source	B-Application
.	O
</s>
<s>
Typologically	O
,	O
GF	O
is	O
a	O
functional	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
GF	O
Resource	O
Grammar	O
Library	O
is	O
the	O
standard	O
library	O
for	O
Grammatical	B-Language
Framework	I-Language
.	O
</s>
<s>
There	O
was	O
a	O
special	O
interest	O
in	O
porting	O
resources	O
from	O
other	O
open-source	B-Application
approaches	O
,	O
such	O
as	O
WordNets	O
and	O
Apertium	O
,	O
and	O
reciprocally	O
making	O
GF	O
resources	O
easily	O
reusable	O
in	O
other	O
approaches	O
.	O
</s>
<s>
All	O
results	O
of	O
the	O
summer	O
school	O
are	O
available	O
as	O
open-source	B-Application
software	I-Application
released	O
under	O
the	O
LGPL	O
license	O
.	O
</s>
<s>
It	O
was	O
a	O
collaborative	O
effort	O
to	O
create	O
grammars	O
of	O
new	O
languages	O
in	O
Grammatical	B-Language
Framework	I-Language
,	O
GF	O
.	O
</s>
<s>
All	O
results	O
of	O
the	O
Summer	O
School	O
were	O
made	O
available	O
as	O
open-source	B-Application
software	I-Application
released	O
under	O
the	O
LGPL	O
license	O
.	O
</s>
