4735
The remains of four sailors killed in the `` USS Cole '' bombing returned to Dover Air Force Base in Delaware today .
 cardinal: four; product: `` USS Cole ''; facility: Dover Air Force Base; geographical social political: Delaware; date: today
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: four, `` USS Cole '', Dover Air Force Base, Delaware, today 
Answer:
 cardinal: four; product: `` USS Cole ''; facility: Dover Air Force Base; geographical social political: Delaware; date: today