Refer to the input text as context and select the correct relationship between 'Stora Enso' and 'paper' from the available options.
Options: distribution format, product/material produced, owned by, platform

Finnish paper producer Stora Enso (Xetra: ENUR.DE - news ) fell 8.8 percent after it reported weaker-than-expected quarterly profit due to production problems and higher costs.
product/material produced