<human>: Does the sentence "Rail transport of passengers and goods is derived using the 2,791 km (1,734 mi) of railway lines currently in service, of which 1,430 km (889 mi) are electrified and about 900 km (559 mi) allow train speeds greater than 120 km/h (75 mph)." answer the question "How long is the total railway system in Portugal?"

OPTIONS:
- yes
- no
<bot>: yes