4570
Results demonstrated a maximum of 77 % increase in tensile yield strength when PC was reinforced with three CF bundles and micrographs showed multiple regions with zero porosity due to the CF inclusion .
 machanical property: tensile; machanical property: strength; material: PC; concept or principle: reinforced; machanical property: porosity; material: inclusion
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: tensile, strength, PC, reinforced, porosity, inclusion 
Answer:
 machanical property: tensile; machanical property: strength; material: PC; concept or principle: reinforced; machanical property: porosity; material: inclusion