I want to know the answer to the following question:
How long is the total railway system in Portugal?
All the background I'm provided with is that "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).". Is that enough to answer the question?
Answer: yes