2100
Both the yield stress ( ∼550−650 MPa ) as well as the ductility ( ∼15–18 % ) were also higher in case of the ternary alloy .
 machanical property: yield stress; concept or principle: MPa; material: as; material: as; machanical property: ductility; material: ternary alloy
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: yield stress, MPa, as, as, ductility, ternary alloy 
Answer:
 machanical property: yield stress; concept or principle: MPa; material: as; material: as; machanical property: ductility; material: ternary alloy