<s>
Multilayered	O
extended	O
semantic	O
networks	O
(	O
MultiNets	B-Language
)	O
are	O
both	O
a	O
knowledge	O
representation	O
paradigm	O
and	O
a	O
language	O
for	O
meaning	O
representation	O
of	O
natural	O
language	O
expressions	O
that	O
has	O
been	O
developed	O
by	O
Prof	O
.	O
Dr.	O
Hermann	O
Helbig	O
on	O
the	O
basis	O
of	O
earlier	O
Semantic	O
Networks	O
.	O
</s>
<s>
It	O
is	O
used	O
in	O
a	O
question-answering	B-Algorithm
application	I-Algorithm
for	O
German	O
called	O
InSicht	O
.	O
</s>
<s>
It	O
is	O
also	O
used	O
to	O
create	O
a	O
tutoring	O
application	O
developed	O
by	O
the	O
university	O
of	O
University	O
of	O
Hagen	O
to	O
teach	O
MultiNet	B-Language
to	O
knowledge	O
engineers	O
.	O
</s>
<s>
MultiNet	B-Language
is	O
claimed	O
to	O
be	O
one	O
of	O
the	O
most	O
comprehensive	O
and	O
thoroughly	O
described	O
knowledge	O
representation	O
systems	O
.	O
</s>
<s>
Another	O
characteristic	O
of	O
MultiNet	B-Language
distinguishing	O
it	O
from	O
simple	O
semantic	O
networks	O
is	O
the	O
possibility	O
to	O
encapsulate	O
whole	O
partial	O
networks	O
and	O
represent	O
the	O
resulting	O
conceptual	O
capsule	O
as	O
a	O
node	O
of	O
higher	O
order	O
,	O
which	O
itself	O
can	O
be	O
an	O
argument	O
of	O
relations	O
and	O
functions	O
.	O
</s>
<s>
MultiNet	B-Language
has	O
been	O
used	O
in	O
practical	O
NLP	B-Language
applications	O
such	O
as	O
natural	O
language	O
interfaces	O
to	O
the	O
Internet	O
or	O
question	B-Algorithm
answering	I-Algorithm
systems	I-Algorithm
over	O
large	O
semantically	O
annotated	O
corpora	O
with	O
millions	O
of	O
sentences	O
.	O
</s>
<s>
MultiNet	B-Language
is	O
also	O
a	O
cornerstone	O
of	O
the	O
commercially	O
available	O
search	O
engine	O
SEMPRIA-Search	O
,	O
where	O
it	O
is	O
used	O
for	O
the	O
description	O
of	O
the	O
computational	O
lexicon	O
and	O
the	O
background	O
knowledge	O
,	O
for	O
the	O
syntactic-semantic	O
analysis	O
,	O
for	O
logical	O
answer	O
finding	O
,	O
as	O
well	O
as	O
for	O
the	O
generation	O
of	O
natural	O
language	O
answers	O
.	O
</s>
<s>
MultiNet	B-Language
is	O
supported	O
by	O
a	O
set	O
of	O
software	B-Application
tools	I-Application
and	O
has	O
been	O
used	O
to	O
build	O
large	O
semantically	O
based	O
computational	O
lexicons	O
.	O
</s>
<s>
The	O
tools	O
include	O
a	O
semantic	O
interpreter	O
WOCADI	O
,	O
which	O
translates	O
natural	O
language	O
expressions	O
(	O
phrases	O
,	O
sentences	O
,	O
texts	O
)	O
into	O
formal	O
MultiNet	B-Language
expressions	O
,	O
a	O
workbench	O
MWR+	O
for	O
the	O
knowledge	O
engineer	O
(	O
comprising	O
modules	O
for	O
automatic	O
knowledge	O
acquisition	O
and	O
reasoning	O
)	O
,	O
and	O
a	O
workbench	O
LIA+	O
for	O
the	O
computer	O
lexicographer	O
supporting	O
the	O
creation	O
of	O
large	O
semantically	O
based	O
computational	O
lexica	O
.	O
</s>
