198078
Other inventions included a bed with built-in exercise equipment , a device for a tea or coffee urn which would cook eggs in the steam as well as having a small dish to keep toast warm and a device for " improvements in caulking ships , boats and other vessels . "
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None