generate RDF dataset from original Turtle file

and remove awk scripts.

There seems to be an issue in the `.trig` file. Property resources are missing, e.g.:
- property-d01_Z5_G1_WORKSTATIONS4_MM46_TRIGGER#it
- property-d02_Z2_G12_6p_Meeting_Room_MM59_TRIGGER#it
- property-d01_Z5_G12_QUIET_ROOM_MM91_TRIGGER#it