Television broadcasting in Hyderabad began in 1974 with the launch of Doordarshan, the Government of India's public service broadcaster, which transmits two free-to-air terrestrial television channels and one satellite channel. Private satellite channels started in July 1992 with the launch of Star TV. Satellite TV channels are accessible via cable subscription, direct-broadcast satellite services or internet-based television. Hyderabad's first dial-up internet access became available in the early 1990s and was limited to software development companies. The first public internet access service began in 1995, with the first private sector internet service provider (ISP) starting operations in 1998. In 2015, high-speed public WiFi was introduced in parts of the city.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did Doordarshan begin broadcasting in Hyderabad?
Ah, so.. 1974

According to the Sixth China Census, the total population of the City of Nanjing reached 8.005 million in 2010. The statistics in 2011 estimated the total population to be 8.11 million. The birth rate was 8.86 percent and the death rate was 6.88 percent. The urban area had a population of 6.47 million people. The sex ratio of the city population was 107.31 males to 100 females.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was the estimated population of Nanjing in 2011?
Ah, so.. 8.11 million

Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to deduce that its orbit was subject to gravitational perturbation by an unknown planet. Neptune was subsequently observed with a telescope on 23 September 1846 by Johann Galle within a degree of the position predicted by Urbain Le Verrier. Its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining known 14 moons were located telescopically until the 20th century. The planet's distance from Earth gives it a very small apparent size, making it challenging to study with Earth-based telescopes. Neptune was visited by Voyager 2, when it flew by the planet on 25 August 1989. The advent of Hubble Space Telescope and large ground-based telescopes with adaptive optics has recently allowed for additional detailed observations from afar.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How was Neptune found? 
Ah, so..
mathematical prediction