Both trains were of unprecedented light weight construction of 0.92 t/seat , but had disadvantages in maintenance due to their six engine concept ( four Diesel engines for propulsion , two for electricity generation ) .
DET NOUN AUX ADP ADJ ADJ NOUN NOUN ADP NUM NOUN , CCONJ VERB NOUN ADP NOUN ADP ADP PRON NUM NOUN NOUN ( NUM PROPN NOUN ADP NOUN , NUM ADP NOUN NOUN ) .