However, as stealth technology grows, so does anti-stealth technology. Multiple transmitter radars such as those from bistatic radars and low-frequency radars are said to have the capabilities to detect stealth aircraft. Advanced forms of thermographic cameras such as those that incorporate QWIPs would be able to optically see a Stealth aircraft regardless of the aircraft's RCS. In addition, Side looking radars, High-powered optical satellites, and sky-scanning, high-aperture, high sensitivity radars such as radio telescopes, would all be able to narrow down the location of a stealth aircraft under certain parameters. The newest SAM's have a claimed ability to be able to detect and engage stealth targets, with the most notable being the S-400, which is claimed to be able to detect a target with a 0.05 meter squared RCS from 90 km away.
What is the most notable SAM that can detect a stealth target?
the S-400


Input: Sichuan
Chengdu Economic and Technological Development Zone (Chinese: 成都经济技术开发区; pinyin: Chéngdū jīngjì jìshù kāifā qū) was approved as state-level development zone in February 2000. The zone now has a developed area of 10.25 km2 (3.96 sq mi) and has a planned area of 26 km2 (10 sq mi). Chengdu Economic and Technological Development Zone (CETDZ) lies 13.6 km (8.5 mi) east of Chengdu, the capital city of Sichuan Province and the hub of transportation and communication in southwest China. The zone has attracted investors and developers from more than 20 countries to carry out their projects there. Industries encouraged in the zone include mechanical, electronic, new building materials, medicine and food processing.

What is the planned size of the Chengdu Economic and Technological Development Zone?
Output: CETDZ


Input: Article: In Buddhism, Karma (from Sanskrit: "action, work") is the force that drives saṃsāra—the cycle of suffering and rebirth for each being. Good, skillful deeds (Pali: "kusala") and bad, unskillful (Pāli: "akusala") actions produce "seeds" in the mind that come to fruition either in this life or in a subsequent rebirth. The avoidance of unwholesome actions and the cultivation of positive actions is called sīla. Karma specifically refers to those actions of body, speech or mind that spring from mental intent (cetanā), and bring about a consequence or phala "fruit" or vipāka "result".

Now answer this question: Karma's actions come from what?

Output: cetanā


Article: After the meeting, Darwin decided to write "an abstract of my whole work". He started work on 20 July 1858, while on holiday at Sandown, and wrote parts of it from memory. Lyell discussed arrangements with publisher John Murray III, of the publishing house John Murray, who responded immediately to Darwin's letter of 31 March 1859 with an agreement to publish the book without even seeing the manuscript, and an offer to Darwin of 2⁄3 of the profits. (eventually Murray paid £180 to Darwin for the 1st edition and by Darwin's death in 1882 the book was in its 6th edition, earning Darwin nearly £3000.)

Question: How much had the book earned Darwin by the time he died?
Ans: nearly £3000


Here is a question about this article: Ecuador was the site of many indigenous cultures, and civilizations of different proportions. An early sedentary culture, known as the Valdivia culture, developed in the coastal region, while the Caras and the Quitus unified to form an elaborate civilization that ended at the birth of the Capital Quito. The Cañaris near Cuenca were the most advanced, and most feared by the Inca, due to their fierce resistance to the Incan expansion. Their architecture remains were later destroyed by Spaniards and the Incas.
What is the answer to this question: What culture did the Inca fear the most?
****
So... The Cañaris


Article: There are both practical and theoretical difficulties in determining h. The practical difficulties can be illustrated by the fact that the two most accurate methods, the watt balance and the X-ray crystal density method, do not appear to agree with one another. The most likely reason is that the measurement uncertainty for one (or both) of the methods has been estimated too low – it is (or they are) not as precise as is currently believed – but for the time being there is no indication which method is at fault.

Question: Why does this difficulty occur?
Ans:
it is (or they are) not as precise as is currently believed