0002 Automatic synonym acquisition is an important task for various applications. It is used
for example in information retrieval to expand queries appropriately. Another important
application is textual entailment, where synonyms and terms related in meaning need to be
related (lexical entailment). Lexical entailment is known to be crucial to judge textual
entailment. A term refers here to a single word, a compound noun, or a multiple word
phrase. 0003 Previous research which is summarized in Non