Over 1500 structures have been identified but it is probable there were many more.

Few structures designed and built by Guastavino alone have been identified.

The specific structure in your back responsible for your pain is hardly ever identified.

The exact structure of the Alliance military, such as its rank system and branch organization, is not identified within the series or the film.

Difficult to determine, mauveine's molecular structure was identified in 1994.

EO has been used to identify structures in complex networks.

These structures were identified by local divers in 1988.

Researchers, as yet, have very little ability to identify internal structures of large distributed systems like human societies, which is an important scientific problem.

There was also a number of shallow hearths in the area but no clear contemporary structures were identified on site.

Many structures have been identified, including a ballgame court, but are yet to be explored and uncovered.