What is the relationship between Fletcher Building and construction in the context of the input sentence. Choose an answer from: 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.

Among the blue chip stocks, construction company Fletcher Building fell 0.1 per cent to $8.27, telecommunications retailer Spark New Zealand declined 0.7 per cent to $2.86, and Auckland International Airport rose 0.6 per cent to $5.205.

Answer: industry