Earlier in the day, Chilean copper producer Codelco and miner Southern Copper (NYSE: SCCO - news ) saw some spread tightening, with their 2044s and 2042s quoted at 245bp and 370bp, respectively.
Analyze the relationship between 'Codelco' and 'copper' within the context of the input sentence.
Options: product/material produced, director/manager, developer, position held