instruction:
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.
question:
Context : Virtually all battles that are considered part of the 'Battle of the Border' (with the exception of the Battle of Hel, which lasted for more than a month and the Battle of Mokra, a Polish defensive victory) resulted in rapid defeat of Polish forces, which were forced to abandon the regions of Pomerania, Greater Poland and Silesia. 
Question : When did Battle of the Border occur?
answer:
point in time


question:
Context : Be Kind Rewind is a 2008 comedy-drama from New Line Cinema, written and directed by Michel Gondry and starring Jack Black, Mos Def, Melonie Diaz, Danny Glover, Mia Farrow and Sigourney Weaver. 
Question : Which place is Be Kind Rewind in?
answer:
narrative location


question:
Context : The 7.92×57mm Mauser cartridge was adopted by the German Empire in 1905, and was the German service cartridge in both World Wars. 
Question : What year was 7.92×57mm Mauser made?
answer:

service entry