id	keyword
ap-9667	clocks
ap-9667	czech
ap-9667	tower
ap-9667	production
ap-9667	prague
ap-9667	century
ap-9667	božek
ap-9667	technical
ap-9667	german
ap-9667	josef
ap-9667	clockmaker
ap-9667	school
ap-9667	tower clocks
ap-9667	guild
ap-9667	attempts
ap-9667	praha
ap-9667	lands
ap-9667	industrial