87835
Only later did he and other investment bankers at Drexel Burnham Lambert , followed by those of competing firms , begin organizing the issue of bonds that were speculative grade from the start .
 organization: Drexel Burnham Lambert
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Drexel Burnham Lambert 
Answer:
 organization: Drexel Burnham Lambert