If you think about how much information it would take to make the pre-existing structure, it's astronomical.

Predictive learning is one attempt to learn with a minimum of pre-existing mental structure.

Some were based on pre-existing Roman structures, some newly built, though others may have been built at a later date.

The improvised nature begs the player to dismantle and examine pre-existing structure within the music.

Beyond the entrance, the building's alignment changes to mesh with pre-existing structures.

It was built, perhaps over a pre-existing structure, in the 15th century.

In 1617, the church was reconstructed at a location very near the pre-existing structure.

The church with the same name is from 1738 (a rose window and other Gothic-style details from a pre-existing structure can be seen today).

Mother Church (1776), rebuilt in late Baroque style over a pre-existing medieval structure.

These facts prove the enormity of the pre-existing structure.