43693
The bedrock of this region is almost entirely Triassic sandstone , outcrops of which have long been quarried , notably at Runcorn , providing the distinctive red stone for Liverpool Cathedral and Chester Cathedral .
 Triassic, Runcorn, Liverpool Cathedral, Chester Cathedral
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Triassic, Runcorn, Liverpool Cathedral, Chester Cathedral