This volume consists of the papers proceeding from SULA 4, the fourth Conference on the Semantics of Under-represented Languages in the Americas, which was held on the Campus of the Universidade de SApo Paulo from May 24th-26th, 2007.Palo Alto, CA: CSL1. McKenzie, Andrew. 2007. Switch-Reference and Situation Semantics. URL people.umass.edu/armckenz/research/srss.pdf, ms. University of ... How to count situations (notes towards a usera#39;s manual). Ms. M1T, July 2005.