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Sources like laser beam , electron beam and infrared beam are used as heating tool .
 concept or principle: laser beam; concept or principle: electron beam; concept or principle: infrared; machine or equipment: beam; material: as; machine or equipment: tool
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:
 concept or principle: laser beam; concept or principle: electron beam; concept or principle: infrared; machine or equipment: beam; material: as; machine or equipment: tool