1457
The former type of crack depends mainly on the solidification nature of the material and is usually caused by the obstruction of solidified grain flow or high strain in the melt pool .
 concept or principle: solidification; material: material; concept or principle: grain; machanical property: strain; material: melt pool
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: solidification; material: material; concept or principle: grain; machanical property: strain; material: melt pool