9400
These findings provided useful information for the application of ultrafine beta - W nanocrystals in microelectronics and spintronics .
 Chemical: W
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: W 
Answer:
 Chemical: W