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the 13th gate offers 13 themed experiences to make every nightmare seem real from crawling through a crematory oven and an old hearse to being lost in dark underground tunnels or finding yourself standing on a rickety bridge over a bed of live snakes .
 bed, snakes
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
Answer:
 bed, snakes