2913
This reveals a wide range of melt track solidification phenomena as well as spatter and porosity formation .
 process parameter: range; concept or principle: melt; concept or principle: solidification; material: as; material: as; machanical property: porosity
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: range, melt, solidification, as, as, porosity 
Answer:
 process parameter: range; concept or principle: melt; concept or principle: solidification; material: as; material: as; machanical property: porosity