7300
To overcome the hardness drop , a new alloy LC2 ( Febal−x-Cr-Mo-W-V-Cox ) was blended by addition of 3–5 % of Co in LC1 .
 machanical property: hardness; material: alloy; material: Co
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: hardness, alloy, Co 
Answer:
 machanical property: hardness; material: alloy; material: Co