The company is developing a new car 'in partnership' with leading auto manufacturers in Japan.
Their marriage is a 'partnership' that has remained strong despite family illness.
The two companies have gone/entered 'into partnership' (with each other).
(..) No, It couldn't That your nuptials were rather poorly timed. Thus ... Our relationship ... Relationship? Very well.. partnership Has not yet run it's course, My dear fellow if you could be bothered to see this through to the end, I shall never again ask you to assist me. (..)2011 Sherlock Holmes: A Game of Shadows