TASK 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.
PROBLEM: Context : Love Is a Many Splendored Thing focused on lives and loves in San Francisco, California. 
Question : Which place does Love Is a Many Splendored Thing exist in?

SOLUTION: narrative location

PROBLEM: Context : The Madonna Litta is a late 15th-century painting, traditionally attributed to Leonardo da Vinci, in the Hermitage Museum, Saint Petersburg. 
Question : What is the name of the place where Madonna Litta can be found?

SOLUTION: collection

PROBLEM: Context : Production of the 2S5 Giatsint-S started in 1976 along with the towed version the 2A36 Giatsint-B. It was introduced into service in 1978 and has also been known as the M1981 by the United States. 
Question : What year did 2S5 Giatsint-S come into use?

SOLUTION:
service entry