He has previously been a director of Revelytix Inc, (sold to Teradata), an enterprise data company, CEO of Eyeona a software company marketing a retail pricing application, Managing Director US Operations of ItemField, a venture backed startup (sold to Informatica), and Senior Vice President of Nastel Technologies, an enterprise software company.
What is the relationship between 'software company' and 'software' in the context of the input sentence.
Options: founded by, manufacturer, employer, product/material produced