Complex sentence: For the 2012 Floriade the cities of Enschede, Rotterdam and Tilburg indicated an The Dutch Horticultural Association (NTR) but only the Region of Venlo submitted a bidbook.
Split into simpler sentences: For the 2012 Floriade the cities of Enschede, Rotterdam and Tilburg submitted interest to the NTR-The Dutch Horticultural Association. Only the Region of Venlo submitted a bidbook.