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.

Context : After the match, Li Na was praised by the Chinese media, and her popularity throughout China was expected to grow significantly in the coming months, as she became the first Chinese national, male or female, ever to win a tennis Grand Slam title in singles, ensuring her place in the sport's history. 
Question : What city is Li Na from?
residence

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?
point in time

Context : John Adams Webster was born at Broom's Bloom, his family's ancestral home, on September 19, 1789, in Harford County, Maryland. 
Question : What armed force was John Adams Webster a part of?

military branch