Definition: Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.

Positive Example 1 -
Input: Context : Isaac Nicola Romero (1916 in Havana, Cuba -- 1997) was a prominent Cuban guitarist and one of the founders of the modern Cuban Guitar School. 
Question : What was Isaac Nicola's city of birth?
Output: place of birth

Positive Example 2 -
Input: Context : Both Timur and Demir are popular male names in Turkey today. 
Question : What was the title that Timur held?
Output: noble title

Negative Example 1 -
Input: Context : Faye Wong (born 8 August 1969) is a Chinese singer-songwriter and actress based in Hong Kong, often referred to as a ``diva'' in Hong Kong media. 
Question : When did Faye Wong born ?
Output: sex or gender

Negative Example 2 -
Input: Context : The Boeing 601 (sometimes referred to as the BSS-601, and previously as the HS-601) is a communications satellite bus introduced in 1987 by Hughes Space and Communications Company. 
Question : Which was the official year for the approval of Boeing 601?
Output: time of invension

Now complete the following example -
Input: Context : Fort-12 (Форт-12) -- first model, 9×18mm Makarov cartridge Fort-12-02 (Форт-12-02) -- limited edition (chromium-plated Fort-12) Fort-12-03 (Форт-12-03) -- limited edition (nickel-plated Fort-12) Fort-12B (Форт-12Б) -- a suppressed version of the Fort-12 (with detachable suppressor) Fort-12 CURZ (Форт-12 CURZ) -- second model, 9x17mm (.380 ACP) cartridge Fort-12N (Форт-12Н) -- an award of President of Ukraine (since 1995) and state award of Ukraine (since 2000), manufactured in presentational grade (with silvered frame, gold inlays and engravings) Sokol (Сокол) -- 
Question : What year was Fort-12 made?
Output: 


Answer: service entry