8240
Currently , Big Area Additive Manufacturing ( BAAM ) machine users mitigate this problem by trial and error , which is costly and may result in decreased mechanical properties , monetary losses and time inefficiencies .
 process parameter: Area; manufacturing process: Additive Manufacturing; machine or equipment: machine; concept or principle: trial and error; concept or principle: mechanical properties
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: Area, Additive Manufacturing, machine, trial and error, mechanical properties 
Answer:
 process parameter: Area; manufacturing process: Additive Manufacturing; machine or equipment: machine; concept or principle: trial and error; concept or principle: mechanical properties