9497
In a motorized vehicle a number of easily measurable signals with frequency components related to the rotational speed of the engine can be found , e.g. , vibrations , electrical system voltage level , and ambient sound .
 used for: frequency components, measurable signals; feature of: frequency components, rotational speed of the engine; hyponym of: vibrations, measurable signals; conjunction: vibrations, electrical system voltage level; hyponym of: electrical system voltage level, measurable signals; conjunction: electrical system voltage level, ambient sound; hyponym of: ambient sound, measurable signals
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  frequency components, measurable signals; frequency components, rotational speed of the engine; vibrations, measurable signals; vibrations, electrical system voltage level; electrical system voltage level, measurable signals; electrical system voltage level, ambient sound; ambient sound, measurable signals 
Answer:
 used for: frequency components, measurable signals; feature of: frequency components, rotational speed of the engine; hyponym of: vibrations, measurable signals; conjunction: vibrations, electrical system voltage level; hyponym of: electrical system voltage level, measurable signals; conjunction: electrical system voltage level, ambient sound; hyponym of: ambient sound, measurable signals