1990
The events of the last few years have amplified four issues , which have always existed , but have never been as rampant as in the present upheaval in the region .
 date: the last few years; cardinal: four
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
 Entities: the last few years, four 
Answer:
 date: the last few years; cardinal: four