Input: Read this: Additionally, cable-ready TV sets can display HD content without using an external box. They have a QAM tuner built-in and/or a card slot for inserting a CableCARD.
Question: SD content can be displayed by cable-ready TVs without using what?

Output: unanswerable

Input: Read this: Samuel Adelstein described the Lombardi mandolin in 1893 as wider and shorter than the Neapolitan mandolin, with a shallower back and a shorter and wider neck, with six single strings to the regular mandolin's set of 4. The Lombardi was tuned C, D, A, E, B, G. The strings were fastened to the bridge like a guitar's. There were 20 frets, covering three octaves, with an additional 5 notes. When Adelstein wrote, there were no nylon strings, and the gut and single strings "do not vibrate so clearly and sweetly as the double steel string of the Neapolitan."
Question: Who described the Lombardi mandolin as wider and shorter than the Neoapolitan mandolin?

Output: Samuel Adelstein

Input: Read this: The king appoints the prime minister from the legislature and also appoints a minority of legislators to both chambers of the Libandla (parliament) with help from an advisory council. The king is allowed by the constitution to appoint some members to parliament for special interests. These special interests are citizens who might have been left out by the electorate during the course of elections or did not enter as candidates. This is done to balance views in parliament. Special interests could be people of gender, race, disability, the business community, civic society, scholars, chiefs and so on.
Question: Why is the king allowed to appoint members of parliament?

Output: to balance views in parliament

Input: Read this: The Early Cretaceous spans from 145 million to 100 million years ago. The Early Cretaceous saw the expansion of seaways, and as a result, the decline and extinction of sauropods (except in South America). Many coastal shallows were created, and that caused Ichthyosaurs to die out. Mosasaurs evolved to replace them as head of the seas. Some island-hopping dinosaurs, like Eustreptospondylus, evolved to cope with the coastal shallows and small islands of ancient Europe. Other dinosaurs rose up to fill the empty space that the Jurassic-Cretaceous extinction left behind, such as Carcharodontosaurus and Spinosaurus. Of the most successful would be the Iguanodon which spread to every continent. Seasons came back into effect and the poles got seasonally colder, but dinosaurs still inhabited this area like the Leaellynasaura which inhabited the polar forests year-round, and many dinosaurs migrated there during summer like Muttaburrasaurus. Since it was too cold for crocodiles, it was the last stronghold for large amphibians, like Koolasuchus. Pterosaurs got larger as species like Tapejara and Ornithocheirus evolved.
Question: What event of the Early Cretaceous caused the extinction of several species?

Output:
expansion of seaways