Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Speyer Cathedral' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
[19] The "double-bay system" of Speyer functioning as a support for the stone vaults was copied in many monuments along the Rhine.
The nave, towers and domes are all roofed with copper, which has weathered to pale green, in contrast to the pinkish red of the building stone, and the polychrome of the Westwerk.
The arcade has piers of a simple form, each with a wide attached shaft, the alternate shafts carrying a stone arch of the high vault.