Complex sentence: Brunswick depot is home to 50 trams in total: 17 B2-class trams, 15 D2-class trams and 17 Z3-class trams.
Split into simpler sentences: Brunswick depot is home to 50 trams in total. This comprises of 17 B2-class trams, 15 D2-class trams and 17 Z3-class trams.