15709
It covers SnO ( 2 ) with different morphologies ranging from 1D nanorods / nanowires / nanotubes , to 2D nanosheets , to 3D hollow nanostructures .
 Chemical: SnO ( 2 )
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: SnO ( 2 )