Question: Regarding the literary work that derives Harry Potter and the Half-Blood Prince (which has the official website http://harrypotter.warnerbros.com/harrypotterandthehalf-bloodprince/), tell me the first line.
Choices: When he was nearly thirteen, my brother Jem got his arm badly broken at the elbow.
Harry Potter was a highly unusual boy in many ways.
Scarlett O’Hara was not beautiful, but men seldom realized it when caught by her charm as the Tarleton twins were.
All this happened, more or less.
The sun did not shine.
The family of Dashwood had been long settled in Sussex.
It was nearing midnight and the Prime Minister was sitting alone in his office, reading a long memo that was slipping through his brain without leaving the lightest trace of meaning behind.
The hottest day of the summer so far was drawing to a close and a drowsy silence lay over the large, square houses of Privet Drive.
Kids, I'm gonna tell you an incredible story.
This book is largely concerned with Hobbits, and from its pages a reader may discover much of their character and a little of their history.
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "literary work" . ?e <derivative_work> ?e_1 . ?e_1 <pred:name> "Harry Potter and the Half-Blood Prince" . ?e_1 <official_website> ?pv_1 . ?pv_1 <pred:value> "http://harrypotter.warnerbros.com/harrypotterandthehalf-bloodprince/" . ?e <first_line> ?pv .  }
Program:
function: Find
inputs: Harry Potter and the Half-Blood Prince
function: FilterStr
dependencies: 0
inputs: official website
http://harrypotter.warnerbros.com/harrypotterandthehalf-bloodprince/
function: Relate
dependencies: 1
inputs: derivative work
backward
function: FilterConcept
dependencies: 2
inputs: literary work
function: QueryAttr
dependencies: 3
inputs: first line
Answer: It was nearing midnight and the Prime Minister was sitting alone in his office, reading a long memo that was slipping through his brain without leaving the lightest trace of meaning behind.