Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Debt held by 15 of the biggest producers including Barrick Gold Corp. and Goldcorp Inc. hit a record $31.5 billion at the end of the first quarter, up from less than $2 billion in 2005, according to data compiled by Bloomberg Intelligence.

Answer: product_or_material_produced: Goldcorp, Gold