4632
Many description logics -LRB- DLs -RRB- combine knowledge representation on an abstract , logical level with an interface to `` concrete '' domains such as numbers and strings .
 knowledge representation, description logics -LRB- DLs -RRB-
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 knowledge representation, description logics -LRB- DLs -RRB-