1082
In contrast , a more recent paper by Thore investigates the abovementioned factor of stresses in support-free TO-solutions , while adhering to the volume constraint , linking economy and fabrication .
 concept or principle: investigates; process parameter: volume constraint; manufacturing process: fabrication
Please list all entity words in the text that fit the category.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} 
Answer:
 concept or principle: investigates; process parameter: volume constraint; manufacturing process: fabrication