1806
The introduction of hybrid machines that combine AM with subtractive and other manufacturing processes that operate in a sequential manner aim to overcome issues around part accuracy .
 machine or equipment: machines; manufacturing process: AM; manufacturing process: subtractive; manufacturing process: manufacturing processes; process characterization: accuracy
Please list all entity words in the text that fit the category.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} 
Answer:
 machine or equipment: machines; manufacturing process: AM; manufacturing process: subtractive; manufacturing process: manufacturing processes; process characterization: accuracy