18698
The interfacial - organized monolayer water film ( MWF ) induced " two - step " aggregation of nanographene : both in stacking and sliding assembly pathways .
 Chemical: nanographene
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: nanographene