217
These measurements were conducted with three infiltrating gases ( argon , nitrogen , and helium ) within a temperature range of 295–470 K and a gas pressure range of 1.4–101 kPa .
 concept or principle: infiltrating gases; material: argon; material: nitrogen; material: helium; process parameter: temperature range; material: K; concept or principle: gas; process parameter: range
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: infiltrating gases, argon, nitrogen, helium, temperature range, K, gas, range 
Answer:
 concept or principle: infiltrating gases; material: argon; material: nitrogen; material: helium; process parameter: temperature range; material: K; concept or principle: gas; process parameter: range