Definition of "relationship"

But some discussion of the complex relationship between “allohistory” and sf is appropriate here, as the genres overlap in certain ways. Classical allohistory— such as Trevelyan's "What if Napoleon had won the Battle of Waterloo?" and Churchill's "If Lee had not won the Battle of Gettysburg" —is a rigorously consistent thought-experiment in historical causality.

2011 February 1, Istvan Csicsery-Ronay, Jr., The Seven Beauties of Science Fiction‎, Wesleyan University Press, pages 102–103

Policing the relationship between government and business in a free society is difficult. Businesspeople have every right to lobby governments, and civil servants to take jobs in the private sector.

2013 August 10, Schumpeter, “Cronies and capitols”, in The Economist, volume 408, number 8848

I'm not advocating sexual promiscuity but I think it's possible for a woman to have many kinds of sexual relationships with many men and that shouldn't affect the status of the marriage.

1975 March 17, Marian Christy, “Suzy Chaffee, A Liberated Beauty”, in The Lebanon Daily News

Her most satisfying sexual relationship seemed to be a threesome with Charles Chaplin Jr. and Eddy Robinson Jr., the spurned sons of famous film fathers.

2000 April 8, Dorthea Straus, “Oates on Marilyn: Men, drugs, tragedy”, in The Baltimore Sun

“I Love Lisa” opens with one of my favorite underappreciated running jokes from The Simpsons: the passive-aggressive, quietly contentious relationship of radio jocks Bill and Marty, whose mindless happy talk regularly gives way to charged exchanges that betray the simmering resentment and disappointment perpetually lingering just under the surface of their relationship.

2012 August 5, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “I Love Lisa” (season 4, episode 15; originally aired 02/11/1993)”, in (Please provide the book title or journal name)