1748
Such knowledge comes either from domain experts based on their experience or from various physical or geometric constraints that govern the objects we try to model .
 domain experts, knowledge; domain experts, physical or geometric constraints; physical or geometric constraints, knowledge
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:
 domain experts, knowledge; domain experts, physical or geometric constraints; physical or geometric constraints, knowledge