Instead, the tree has a profusion of branches of uncertain relationships, false starts and dead ends.

Taxa of uncertain relationship are indicated by a question mark.

Pederpes is of uncertain relationship to other tetrapod families.

Angola has had an uncertain relationship with its surroundings since it was created in 1890.

In debating "the personal," however, it's easy to lose sight of a related issue - poetry's trembling, uncertain relationship with "the public."

The Magistrate has an intimate yet uncertain relationship with the girl.

Lyrically the track discusses an uncertain relationship, leading to vulnerability, with Roberts describing it as a "dark" song.

Maybe it reflects our uncertain relationship to reality.

Pederpes is placed in the family Whatcheeriidae, of uncertain relationships to other tetrapod families.

The uncertain new relationship between the countries, one rich in promise and in lingering suspicions, is on full view today in this city.