5563
The particles are subject to both gravitational and cohesive forces since cohesive forces become important at the nanoscale .
 concept or principle: particles; concept or principle: forces; concept or principle: forces
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: particles, forces, forces 
Answer:
 concept or principle: particles; concept or principle: forces; concept or principle: forces