... argument to form its result, e.g.S [dcl]\NP combines with the NP to its left to forman S[dcl]. More powerful combinators allow cate-gories to combine with greater flexibility.We cannot form a ... phenomena informalism-specific ways. Tools for reversing theseconversions are desirable for downstream parser useand parser comparison. However, reversing conver-sions is difficult, as corpus conversions ... of the 50th Annual Meeting of the Association for Computational Linguistics, pages 105–109,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsRobust Conversion...