Complex sentence: Before that date Holendrecht was just a Metro station on the Amsterdam Metro network which was opened on 16th October 1977 as a metro station and is now served by two lines, the 50 and 54.
Split into simpler sentences: Before that date Holendrecht was just a Metro station on the Amsterdam Metro network. The station was opened on 16 October 1977 as a metro station and is now served by two lines, the 50 and 54.