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Rheological data showed drying of the recycled polyethylene terephthalate led to an increase in the polymer ’ s viscosity .
 machanical property: Rheological; concept or principle: data; manufacturing process: drying; concept or principle: recycled; material: polyethylene terephthalate; application: led; material: polymer; material: s
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: Rheological, data, drying, recycled, polyethylene terephthalate, led, polymer, s 
Answer:
 machanical property: Rheological; concept or principle: data; manufacturing process: drying; concept or principle: recycled; material: polyethylene terephthalate; application: led; material: polymer; material: s