3. Main Datasets
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Main datasets as described in the User’s Guide, including pollutant concentrations in the Shing Mun Tunnel and Fort McHenry Tunnel, and a summary of emission factors in the Fort McHenry Tunnel' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["air pollution","diesel","emissions","gasoline","motor vehicles","nitrogen oxides","particulate matter"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Main datasets as described in the User’s Guide, including pollutant concentrations in the Shing Mun Tunnel and Fort McHenry Tunnel, and a summary of emission factors in the Fort McHenry Tunnel' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Main datasets as described in the User’s Guide, including pollutant concentrations in the Shing Mun Tunnel and Fort McHenry Tunnel, and a summary of emission factors in the Fort McHenry Tunnel
air pollution; diesel; emissions; gasoline; motor vehicles; nitrogen oxides; particulate matter