In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Input: Consider Input: Which category contains a 2 year old tree?, Context: To accurately map the Amazon's biomass and subsequent carbon related emissions, the classification of tree growth stages within different parts of the forest is crucial. In 2006 Tatiana Kuplich organized the trees of the Amazon into four categories: (1) mature forest, (2) regenerating forest [less than three years], (3) regenerating forest [between three and five years of regrowth], and (4) regenerating forest [eleven to eighteen years of continued development]. The researcher used a combination of Synthetic aperture radar (SAR) and Thematic Mapper (TM) to accurately place the different portions of the Amazon into one of the four classifications.

Output: 2


Input: Consider Input: What economic improvement did the successors make?, Context: Louis-Philippe was overthrown by a popular uprising in the streets of Paris in 1848. His successor, Napoleon III, and the newly appointed prefect of the Seine, Georges-Eugène Haussmann, launched a gigantic public works project to build wide new boulevards, a new opera house, a central market, new aqueducts, sewers, and parks, including the Bois de Boulogne and Bois de Vincennes. In 1860, Napoleon III also annexed the surrounding towns and created eight new arrondissements, expanding Paris to its current limits.

Output: central market


Input: Consider Input: What was Prussia?, Context: Austria was not able to retake Silesia or make any significant territorial gain. However, it did prevent Prussia from invading parts of Saxony. More significantly, its military performance proved far better than during the War of the Austrian Succession and seemed to vindicate Maria Theresa's administrative and military reforms. Hence, Austria's prestige was restored in great part and the empire secured its position as a major player in the European system. Also, by promising to vote for Joseph II in the Imperial elections, Frederick II accepted the Habsburg preeminence in the Holy Roman Empire. The survival of Prussia as a first-rate power and the enhanced prestige of its king and its army, however, was potentially damaging in the long run to Austria's influence in Germany.


Output: a first-rate power