4718
Theoretical research in the area of machine translation usually involves the search for and creation of an appropriate formalism .
 formalism, machine translation
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:
 formalism, machine translation