Question: The Swiss agribusiness that owns the Minnesota Northrup-King seed company was formed in 2000 by a merger of Zeneca and which other corporation?
Sentence (from "L. Teweles Seed Co."): The firm was a family run business over 4 generations until it was later acquired by Kent Feeds, Inc. of Muscatine, Iowa in 1972 for an undisclosed amount.
Relevant evidence: No