In the context of the input sentence, determine the relationship between 'Mary Barra' and 'General Motors'.
Options: currency, manufacturer, employer, business division

Share on Facebook Share on Twitter Share on WhatsApp Share on LinkedIn Share on Reddit Share on Google+ E-mail Share on Twitter Share on WhatsApp About a year ago, Mary Barra gathered General Motors Co.’s top 300 executives at the company’s test track west of Detroit.
employer