Complex sentence: On 1 September 2009, a special "Winton Train" composed of one or two steam locomotives (out of a set of six) and carriages used in the 1930s set off from the Prague Main railway station for London via the original Kindertransport route.
Split into simpler sentences: On 1 September 2009, a special "Winton Train" set off from the Prague Main railway station. The train, composed of one or two steam locomotives (out of a set of six) and carriages used in the 1930s, headed to London via the original Kindertransport route.