<s>
Watson	O
is	O
a	O
software	O
program	O
for	O
Microsoft	B-Application
Windows	I-Application
released	O
by	O
Intellext	O
in	O
2005	O
,	O
which	O
reads	O
what	O
the	O
user	O
is	O
working	O
on	O
and	O
uses	O
pattern	O
recognition	O
to	O
proactively	O
find	O
relevant	O
documents	O
for	O
the	O
user	O
.	O
</s>
<s>
It	O
demonstrates	O
a	O
lightweight	O
approach	O
to	O
context-specific	O
proactive	B-Application
information	I-Application
delivery	I-Application
.	O
</s>
