id	keyword
asir-41892	defense
asir-41892	civil
asir-41892	subway
asir-41892	utility
asir-41892	tunnels
asir-41892	research
asir-41892	wartime
asir-41892	urban
asir-41892	stations
asir-41892	air
asir-41892	engineering
asir-41892	construction
asir-41892	projects
asir-41892	science
asir-41892	system