What is the relationship between 'Northern Trust' and 'Asset Management' in the context of the input sentence.
Options: founded by, location of formation, publisher, product/material produced

Asset Management at Northern Trust comprises Northern Trust Investments, Inc., Northern Trust Global Investments Limited, Northern Trust Global Investments Japan, K.K., NT Global Advisors, Inc. and investment personnel of The Northern Trust Company of Hong Kong Limited and The Northern Trust Company.
product/material produced