171
Some workflow variations , sources of error and ways to increase the reproducibility of such analysis workflows are discussed .
 concept or principle: workflow variations; concept or principle: error; concept or principle: reproducibility; concept or principle: workflows
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: workflow variations, error, reproducibility, workflows 
Answer:
 concept or principle: workflow variations; concept or principle: error; concept or principle: reproducibility; concept or principle: workflows