4704
Because the conductors are liquid , they also enable the possibility of manipulating the properties of such devices by flowing metal in or out of selected cavities .
 material: conductors; concept or principle: properties; material: metal
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: conductors, properties, metal 
Answer:
 material: conductors; concept or principle: properties; material: metal