Input: Article: Nanjing is the intersection of Yangtze River, an east-west water transport artery, and NanjingBeijing railway, a south-north land transport artery, hence the name "door of the east and west, throat of the south and north". Furthermore, the west part of the Ningzhen range is in Nanjing; the Loong-like Zhong Mountain is curling in the east of the city; the tiger-like Stone Mountain is crouching in the west of the city, hence the name "the Zhong Mountain, a dragon curling, and the Stone Mountain, a tiger crouching". Mr. Sun Yet-sen spoke highly of Nanjing in the "Constructive Scheme for Our Country", "The position of Nanjing is wonderful since mountains, lakes and plains all integrated in it. It is hard to find another city like this."

Now answer this question: What is the east-west waterway near Nanjing?

Output: Yangtze River

Input: Article: In the 6th century BCE, Taoist teacher Lao Tzu espoused a series of naturalistic concepts with some elements of humanistic philosophy. The Silver Rule of Confucianism from Analects XV.24, is an example of ethical philosophy based on human values rather than the supernatural. Humanistic thought is also contained in other Confucian classics, e.g., as recorded in Zuo Zhuan, Ji Liang says, "People is the zhu (master, lord, dominance, owner or origin) of gods. So, to sage kings, people first, gods second"; Neishi Guo says, "Gods, clever, righteous and wholehearted, comply with human." Taoist and Confucian secularism contain elements of moral thought devoid of religious authority or deism however they only partly resembled our modern concept of secularism.

Now answer this question: Where could you read this information?

Output: Zuo Zhuan

Input: Article: Walking is a popular recreational activity in London. Areas that provide for walks include Wimbledon Common, Epping Forest, Hampton Court Park, Hampstead Heath, the eight Royal Parks, canals and disused railway tracks. Access to canals and rivers has improved recently, including the creation of the Thames Path, some 28 miles (45 km) of which is within Greater London, and The Wandle Trail; this runs 12 miles (19 km) through South London along the River Wandle, a tributary of the River Thames. Other long distance paths, linking green spaces, have also been created, including the Capital Ring, the Green Chain Walk, London Outer Orbital Path ("Loop"), Jubilee Walkway, Lea Valley Walk, and the Diana, Princess of Wales Memorial Walk.

Now answer this question: What recent improvements has served to enhance the walking experience?

Output:
Access to canals and rivers