1442
The trend shows an increase in laser power and also an increase in work chamber .
 concept or principle: trend; process parameter: laser power
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: trend, laser power 
Answer:
 concept or principle: trend; process parameter: laser power