However, we have complemented this parser with three other approaches: (Jindal and Liu, 2006 )'s approach is used to identify intra-sentence comparison relations; we have designed a tagger based on (Fei et al., 2008) 's approach to identify topic-opinion relations; and we have proposed a new approach to tag attributive relations<cite> (Mithun, 2012)</cite> . A description and evaluation of these approaches can be found in<cite> (Mithun, 2012)</cite> .