1436
Down we went , further to cells that had no light , little air , cockroaches , filth , and , on the ground , a gas mask and bottles of chemicals .
 we, cells that had no light , little air , cockroaches , filth, that
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 we, cells that had no light , little air , cockroaches , filth, that