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These alloys were tested in corrosive syngas atmosphere at elevated temperatures to explore their applicability in such harsh environments .
 material: alloys; machanical property: corrosive; process parameter: temperatures
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: alloys, corrosive, temperatures 
Answer:
 material: alloys; machanical property: corrosive; process parameter: temperatures