1913
Unfortunately , such estimates would typically require the relations -LRB- scale factors -RRB- between the frequency components and the speed for different gears to be known .
 frequency components, speed; speed, gears
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:
 frequency components, speed; speed, gears