63575
The synthesis of hexaferrocenylbenzene has been reported using Negishi coupling of hexaiodidobenzene and diferrocenylzinc , using tris ( dibenzylideneacetone ) dipalladium ( 0 ) as catalyst , in tetrahydrofuran : The vinylferrocene can be made by a Wittig reaction of the aldehyde , a phosphonium salt , and sodium hydroxide .
 person: Negishi; person: Wittig
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: Negishi, Wittig 
Answer:
 person: Negishi; person: Wittig