38991
Large quantities of aldehydes are produced by the hydroformylation reaction of alkenes , carbon monoxide , and H. Hydroformylation is coupled to the Shell higher olefin process to give precursors to detergents .
 organization: Shell
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: Shell 
Answer:
 organization: Shell