id	keyword
issue-3071	safety
issue-3071	security
issue-3071	sports
issue-3071	events
issue-3071	stadium
issue-3071	disaster
issue-3071	management
issue-3071	crowd
issue-3071	football
issue-3071	measures
issue-3071	convention
issue-3071	sporting
issue-3071	europe
issue-3071	spectators
issue-3071	risks
issue-3071	studies
issue-3071	guide
issue-3071	emergency
issue-3071	international
issue-3071	service
issue-3071	mse
issue-3071	sports events
issue-3071	world