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Aiming at these two problems , a snap-fit method is introduced into PolyJet technology to fabricate polymer lattice structures with four typical configurations , namely BCC , BCC-Z , FCC and octet .
 engineering feature: snap-fit; concept or principle: PolyJet; manufacturing process: fabricate; engineering feature: lattice structures; concept or principle: BCC; concept or principle: FCC
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: snap-fit, PolyJet, fabricate, lattice structures, BCC, FCC 
Answer:
 engineering feature: snap-fit; concept or principle: PolyJet; manufacturing process: fabricate; engineering feature: lattice structures; concept or principle: BCC; concept or principle: FCC