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

Ex 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.

Ex Output:
2


Ex Input:
How vast is the area that GRTC serves?, Context: Local transit and paratransit bus service in Richmond, Henrico, and Chesterfield counties is provided by the Greater Richmond Transit Company (GRTC). The GRTC, however, serves only small parts of the suburban counties. The far West End (Innsbrook and Short Pump) and almost all of Chesterfield County have no public transportation despite dense housing, retail, and office development. According to a 2008 GRTC operations analysis report, a majority of GRTC riders utilize their services because they do not have an available alternative such as a private vehicle.

Ex Output:
small


Ex Input:
What style of steam engine is discussed in the article primarily?, Context: Although the reciprocating steam engine is no longer in widespread commercial use, various companies are exploring or exploiting the potential of the engine as an alternative to internal combustion engines. The company Energiprojekt AB in Sweden has made progress in using modern materials for harnessing the power of steam. The efficiency of Energiprojekt's steam engine reaches some 27-30% on high-pressure engines. It is a single-step, 5-cylinder engine (no compound) with superheated steam and consumes approx. 4 kg (8.8 lb) of steam per kWh.[not in citation given]

Ex Output:

reciprocating