1286
A hierarchical octree data structure has been used to analyze support accessibility and the area of support in contact with part .
 data, support, area, support, contact
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 data, support, area, support, contact