Complex sentence: At the end of August 2017 the Melbourne City Council began impounding the bikes declaring them visual pollution after they were found on a raft in Albert Park Lake, up trees, on railway tracks, and on top of toilet blocks.
Split into simpler sentences: At the end of August 2017 the Melbourne City council began impounding the bikes declaring them visual pollution. After they were found on a raft in Albert Park Lake, up trees, on railway tracks, and on top of toilet blocks.