302520
Timeline Construction The Monolith was fabricated by Louie Raffloer at Seattle ’s Black Dog Forge The monolith was a hollow structure measuring 1 ft X 4 ft X 9 ft. It was constructed of 16 gauge steel and L-beams .
 Seattle
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Seattle