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Both experimental data and theoretical simulations demonstrate that the hybrid nanosheets were formed by in - plane connection of small two - dimensional ( 2D ) Co 9 S 8 nanoplates via oleylamine molecules adsorbed at the side surface and corner sites of the nanoplates .
 Chemical: Co 9 S 8; Chemical: oleylamine
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: Co 9 S 8; Chemical: oleylamine