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The resistivity of traces printed from conductive thermoplastic filaments made with carbon-black , graphene , and copper as conductive fillers was found to be 12 , 0.78 , and 0.014 Ω cm , respectively , enabling the creation of resistors with values spanning 3 orders of magnitude .
 machanical property: resistivity; material: thermoplastic filaments; material: graphene; material: copper; material: as; material: be; machine or equipment: resistors; process parameter: magnitude
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: resistivity, thermoplastic filaments, graphene, copper, as, be, resistors, magnitude 
Answer:
 machanical property: resistivity; material: thermoplastic filaments; material: graphene; material: copper; material: as; material: be; machine or equipment: resistors; process parameter: magnitude