18021
Synthesis of mixed ceramic Mg ( x ) Zn ( 1 - x ) O nanofibers via Mg2 + doping using sol - gel electrospinning .
 Chemical: Mg ( x ) Zn ( 1 - x ) O; Chemical: Mg2 +
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Mg ( x ) Zn ( 1 - x ) O; Chemical: Mg2 +