Utilize the input text as a context reference, choose the right relationship between 'Stora Enso' and 'paper' from the options.
Options: product/material produced, industry, headquarters location, subsidiary

Finnish paper producer Stora Enso (Xetra: ENUR.DE - news ) fell 8.3 percent after it reported weaker-than-expected quarterly profit due to production problems and higher costs.
product/material produced