Slinket - SLINK Extraction
Slinket (Slink Events in Text) is a partial modal parser which identifies
subordination constructions introducing modality information in text;
essentially, infinitival and 'that' clauses embedded by factive predicates
('regret'), perception predicates ('see'), predicates referring to events
of attempting ('try'), volition ('want'), command ('order'), among many
others. SlinkET annotates these subordination contexts as SLINKs (subordination
links), the TimeML tag used to represent these kind of modal
contexts. SLINKs can be of different type, depending
on the modality information brought about by the relation between the
embedding and the embedded predicates:
- factive: the event denoted by the embedded predicate is presupposed
or entailed to be true ('John managed to leave the party.').
- counter-factive: the event denoted by the embedded predicate is presupposed
or entailed to be false ('John was unable to leave the party.').
- evidential: the subordinating predicate denotes a reporting or perception
event ('Mary saw/told that John left the party.').
- negative evidential: the subordinating predicate denotes a reporting
event which conveys negative polarity ('Mary denied that John left
- modal: the subordinating predicate introduces a reference to possible
worlds ('John wanted to leave the party').
SLINK annotation follows version 1.2.1 of the TimeML
An example of Slinket output is shown below, the added SLINK is in bold
The Soviet Union
<EVENT eid="e12" class="REPORTING">said</EVENT>
today it had
<EVENT eid="e13" class="OCCURRENCE">sent</EVENT>
an envoy to the Middle East
<MAKEINSTANCE eventID="e12" eiid="ei12" tense="PAST" aspect="NONE" pos="VERB"/>
<MAKEINSTANCE eventID="e13" eiid="ei13" tense="PAST" aspect="PERFECTIVE" pos="VERB"/>
<SLINK lid="l2" relType="EVIDENTIAL" eventInstanceID="ei12" subordinatedEventInstance="ei13"syntax="thatClause_NOT_that"/>
The input to Slinket is chunked text with part-of-speech
tags and event tags (chunks and pos tags are not displayed in the