TASK DEFINITION: This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
PROBLEM: Passage: As early as 1650, settlers from the Virginia colony moved into the area of Albemarle Sound. By 1663, King Charles II of England granted a charter to start a new colony on the North American continent; it generally established North Carolina's borders. He named it Carolina in honor of his father Charles I. By 1665, a second charter was issued to attempt to resolve territorial questions. In 1710, owing to disputes over governance, the Carolina colony began to split into North Carolina and South Carolina. The latter became a crown colony in 1729. Question: What year did King Charles II grant a charter to North America?

SOLUTION: 1663

PROBLEM: Passage: The dominant land plant species of the time were gymnosperms, which are vascular, cone-bearing, non-flowering plants such as conifers that produce seeds without a coating. This is opposed to the earth's current flora, in which the dominant land plants in terms of number of species are angiosperms. One particular plant genus, Ginkgo, is thought to have evolved at this time and is represented today by a single species, Ginkgo biloba. As well, the extant genus Sequoia is believed to have evolved in the Mesozoic. Question: What was the dominant plant species of the Mesozoic?

SOLUTION: gymnosperms

PROBLEM: Passage: From the early 1930s eight countries developed radar, these developments were sufficiently advanced by the late 1930s for development work on sound locating acoustic devices to be generally halted, although equipment was retained. Furthermore, in Britain the volunteer Observer Corps formed in 1925 provided a network of observation posts to report hostile aircraft flying over Britain. Initially radar was used for airspace surveillance to detect approaching hostile aircraft. However, the German Würzburg radar was capable of providing data suitable for controlling AA guns and the British AA No 1 Mk 1 GL radar was designed to be used on AA gun positions. Question: What was originally used to see hostile aircraft approaching?

SOLUTION:
radar