13093
During the past 30 years , an intense wave of clinical investigation has attempted to dissect the putative links between vitamin B6 and cancer .
 Chemical: vitamin B6
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: vitamin B6 
Answer:
 Chemical: vitamin B6