instruction:
This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
question:
Gaddafi married his first wife, Fatiha al-Nuri, in 1969. She was the daughter of General Khalid, a senior figure in King Idris' administration, and was from a middle-class background. Although they had one son, Muhammad Gaddafi (b. 1970), their relationship was strained, and they divorced in 1970. Gaddafi's second wife was Safia Farkash, née el-Brasai, a former nurse from Obeidat tribe born in Bayda. They met in 1969, following his ascension to power, when he was hospitalized with appendicitis; he claimed that it was love at first sight. The couple remained married until his death. Together they had seven biological children: Saif al-Islam Gaddafi (b. 1972), Al-Saadi Gaddafi (b. 1973), Mutassim Gaddafi (1974–2011), Hannibal Muammar Gaddafi (b. 1975), Ayesha Gaddafi (b. 1976), Saif al-Arab Gaddafi (1982–2011), and Khamis Gaddafi (1983–2011). He also adopted two children, Hanna Gaddafi and Milad Gaddafi.
answer:
Who was Gaddafi's first father-in-law?


question:
On November 2, 2014, the Cubs announced that Joe Maddon had signed a five-year contract to be the 54th manager in team history. On December 10, 2014, Maddon announced that the team had signed free agent Jon Lester to a 6-year, $155 million contract. Many other trades and acquisitions occurred during the off season. The opening day lineup for the Cubs contained five new players including rookie right fielder Jorge Soler. Rookies Kris Bryant and Addison Russell were in the starting lineup by mid-April, and rookie Kyle Schwarber was added in mid-June. The Cubs finished the 2015 season with a record of 97–65, third best in the majors. On October 7, in the 2015 National League Wild Card Game, Jake Arrieta pitched a complete game shutout and the Cubs defeated the Pittsburgh Pirates 4–0.
answer:
When did the Cubs announce that Joe Maddon had signed a five-year contract to be the 54th manager?


question:
The Melbourne rail network has its origins in privately built lines from the 1850s gold rush era, and today the suburban network consists of 209 suburban stations on 16 lines which radiate from the City Loop, a partially underground metro section of the network beneath the Central Business District (Hoddle Grid). Flinders Street Station is Melbourne's busiest railway station, and was the world's busiest passenger station in 1926. It remains a prominent Melbourne landmark and meeting place. The city has rail connections with regional Victorian cities, as well as direct interstate rail services to Sydney and Adelaide and beyond which depart from Melbourne's other major rail terminus, Southern Cross Station in Spencer Street. In the 2013–2014 financial year, the Melbourne rail network recorded 232.0 million passenger trips, the highest in its history. Many rail lines, along with dedicated lines and rail yards are also used for freight. The Overland to Adelaide departs Southern Cross twice a week, while the XPT to Sydney departs twice a day.
answer:

How many lines does the Melbourne rail network have?