1. A method for processing natural language text, comprising: receiving as input a natural language text sentence comprising a sequence of white-space delimited words including inflicted words that are formed of morphemes including a stem and one or more affixes; identifying a target verb as a stem of an inflicted word in the text sentence; grouping morphemes from one or more inflicted words with the same syntactic role into constituents; and predicting a semantic role of a constituent for the target verb.