3002
General corrosion was not considered to be a major form of corrosion after 2184 h. Mechanical properties for the traditionally manufactured samples did not change .
 concept or principle: corrosion; material: be; concept or principle: corrosion; concept or principle: Mechanical properties; concept or principle: manufactured
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: corrosion, be, corrosion, Mechanical properties, manufactured 
Answer:
 concept or principle: corrosion; material: be; concept or principle: corrosion; concept or principle: Mechanical properties; concept or principle: manufactured