20780
Sonochemical synthesis and characterization of nano - sized lead ( II ) 3D coordination polymer : Precursor for the synthesis of lead ( II ) oxybromide nanoparticles .
 Chemical: lead ( II ); Chemical: lead ( II ) oxybromide
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: lead ( II ); Chemical: lead ( II ) oxybromide