<s>
TimeML	B-Language
is	O
a	O
set	O
of	O
rules	O
for	O
encoding	O
documents	O
electronically	O
.	O
</s>
<s>
It	O
is	O
defined	O
in	O
the	O
TimeML	B-Language
Specification	O
version	O
1.2.1	O
developed	O
by	O
several	O
efforts	O
,	O
led	O
in	O
large	O
part	O
by	O
the	O
Laboratory	O
for	O
Linguistics	O
and	O
Computation	O
at	O
Brandeis	O
University	O
.	O
</s>
<s>
The	O
TimeML	B-Language
project	O
's	O
goal	O
is	O
to	O
create	O
a	O
standard	O
markup	B-General_Concept
language	I-General_Concept
for	I-General_Concept
temporal	I-General_Concept
events	I-General_Concept
in	O
a	O
document	O
.	O
</s>
<s>
TimeML	B-Language
addresses	O
four	O
problems	O
regarding	O
event	O
markup	O
,	O
including	O
time	O
stamping	O
(	O
with	O
which	O
an	O
event	O
is	O
anchored	O
to	O
a	O
time	O
)	O
,	O
ordering	O
events	O
with	O
respect	O
to	O
one	O
another	O
,	O
reasoning	O
with	O
contextually	O
underspecified	O
temporal	O
expressions	O
,	O
and	O
reasoning	O
about	O
the	O
length	O
of	O
events	O
and	O
their	O
outcomes	O
.	O
</s>
<s>
TimeML	B-Language
was	O
conceptualized	O
in	O
2002	O
during	O
the	O
TERQAS	O
(	O
Time	O
and	O
Event	O
Recognition	O
for	O
Question	B-Algorithm
Answering	I-Algorithm
Systems	I-Algorithm
)	O
workshops	O
,	O
organized	O
by	O
Professor	O
James	O
Pustejovsky	O
of	O
Brandeis	O
University	O
.	O
</s>
<s>
The	O
TERQAS	O
Workshops	O
set	O
out	O
to	O
address	O
the	O
problem	O
of	O
how	O
to	O
enhance	O
natural	O
language	O
question	B-Algorithm
answering	I-Algorithm
systems	I-Algorithm
to	O
answer	O
temporally-based	O
questions	O
about	O
the	O
events	O
and	O
entities	O
in	O
news	O
articles	O
.	O
</s>
<s>
During	O
these	O
workshops	O
,	O
TimeML	B-Language
version	O
1.0	O
was	O
defined	O
,	O
and	O
the	O
TimeBank	O
corpus	O
was	O
created	O
as	O
an	O
illustration	O
.	O
</s>
<s>
In	O
2003	O
,	O
the	O
TANGO	O
(	O
TimeML	B-Language
Annotation	O
Graphical	O
Organizer	O
)	O
workshops	O
produced	O
a	O
graphical	O
annotation	O
tool	O
for	O
TimeML	B-Language
.	O
</s>
<s>
According	O
to	O
the	O
official	O
TimeML	B-Language
website	O
,	O
there	O
are	O
currently	O
three	O
versions	O
of	O
the	O
TimeML	B-Language
specification	O
language	O
,	O
although	O
it	O
is	O
rumored	O
that	O
other	O
versions	O
exist	O
.	O
</s>
<s>
TimeML	B-Language
version	O
1.1	O
was	O
produced	O
in	O
2004	O
.	O
</s>
<s>
TimeML	B-Language
version	O
1.2	O
was	O
produced	O
in	O
2004	O
,	O
shortly	O
after	O
the	O
release	O
of	O
version	O
1.1	O
.	O
</s>
<s>
There	O
were	O
several	O
changes	O
made	O
to	O
the	O
language	O
,	O
and	O
are	O
described	O
in	O
the	O
version	O
1.2.1	O
TimeML	B-Language
guideline	O
as	O
such	O
:	O
</s>
<s>
The	O
optional	O
comment	O
attribute	O
was	O
added	O
to	O
all	O
TimeML	B-Language
elements	O
,	O
for	O
the	O
purpose	O
of	O
giving	O
(	O
human	O
)	O
annotators	O
a	O
place	O
to	O
put	O
observations	O
about	O
annotated	O
text	O
.	O
</s>
<s>
ISO-TimeML	O
was	O
presented	O
to	O
the	O
ISO	O
for	O
consideration	O
as	O
a	O
standard	O
in	O
August	O
2007	O
.	O
</s>
<s>
The	O
following	O
tags	O
defined	O
by	O
the	O
TimeML	B-Language
specification	O
version	O
1.2.1	O
.	O
</s>
<s>
The	O
TIMEML	B-Language
tag	O
is	O
similar	O
to	O
the	O
root	O
tag	O
in	O
an	O
XML	O
document	O
.	O
</s>
<s>
It	O
declares	O
that	O
the	O
rest	O
of	O
the	O
document	O
surrounded	O
by	O
the	O
TIMEML	B-Language
tag	O
is	O
encoded	O
with	O
TimeML	B-Language
tags	O
.	O
</s>
<s>
See	O
the	O
TimeML	B-Language
annotation	O
guidelines	O
for	O
more	O
details	O
.	O
</s>
<s>
Temporal	O
links	O
are	O
the	O
most	O
prevalent	O
as	O
they	O
show	O
how	O
the	O
TimeML	B-Language
elements	O
(	O
events	O
and	O
temporal	O
expressions	O
)	O
are	O
temporally	O
related	O
to	O
each	O
other	O
.	O
</s>
