This book constitutes the refereed proceedings of the 5th Language and Technology Conference:
Challenges for Computer Science and Linguistics LTC 2011 held in Poznan Poland in November
2011. The 44 revised and in many cases substantially extended papers presented in this volume
were carefully reviewed and selected from 111 submissions. The focus of the papers is on the
following topics: speech parsing computational semantics text analysis text annotation
language resources: general issues language resources: ontologies and Wordnets and machine
translation.