5701
For this purpose , a flow field generated by a moving crowd is treated as an aperiodic dynamical system .
 moving crowd, flow field; aperiodic dynamical system, flow field
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:
 moving crowd, flow field; aperiodic dynamical system, flow field