Stream of consciousness: This is the relevant information: Collectively, they stretch from Dandong in the east to Lop Lake in the west, from present-day Sino-Russian border in the north to Qinghai in the south; along an arc that roughly delineates the edge of Mongolian steppe.
Q: Passage: The frontier walls built by different dynasties have multiple courses. Collectively, they stretch from Dandong in the east to Lop Lake in the west, from present-day Sino-Russian border in the north to Qinghai in the south; along an arc that roughly delineates the edge of Mongolian steppe. A comprehensive archaeological survey, using advanced technologies, has concluded that the walls built by the Ming dynasty measure 8,850 km (5,500 mi). This is made up of 6,259 km (3,889 mi) sections of actual wall, 359 km (223 mi) of trenches and 2,232 km (1,387 mi) of natural defensive barriers such as hills and rivers. Another archaeological survey found that the entire wall with all of its branches measures out to be 21,196 km (13,171 mi). Today, the Great Wall is generally recognized as one of the most impressive architectural feats in history.

Question: Based on this passage, where does the great wall of china start and end map?
A: Dandong in the east to Lop Lake in the west , from present - day Sino - Russian border in the north to Qinghai in the south ; along an arc that roughly delineates the edge of Mongolian steppe

Stream of consciousness: The relevant sentence in the passage is: The game was released to manufacturing on 23 April 2018, after four years of production.
Q: Context: The characters Connor and Markus are played by Bryan Dechart and Jesse Williams, respectively. Clancy Brown, Lance Henriksen, and Minka Kelly portray supporting characters Lieutenant Hank Anderson, Carl Manfred, and North, respectively. There are three different composers, one for each playable character: Philip Sheppard for Kara, Nima Fakhrara for Connor, and John Paesano for Markus. Sheppard's cello sequence in Kara's theme was inspired by the flames of a log fire, whereas the motif layered over it came from the two syllables in her name. Fakhrara created custom instruments and used vintage synthesizers in order that the sound could represent the robotic nature of Connor. Paesano's music was made with the idea that it would be "like a church hymn", personifying Markus' transformation into a leader. Sheppard recorded at Abbey Road Studios with the English Session Orchestra; Paesano was at Synchron Stage Vienna with the Synchron Stage Orchestra. Director of photography Aymeric Montouchet used "thick grain and shaky long lens" with shallow depth of field for Kara, "small, tight grain" and a blue palette for Connor, and orange and white colours for Markus. The game was released to manufacturing on 23 April 2018, after four years of production.

Question: how long was detroit become human in development for?
A: four years

Stream of consciousness: The relevant sentence in the passage is: "Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection.
Q: Context: "Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success. In Darwinian terms the phrase is best understood as "Survival of the form that will leave the most copies of itself in successive generations."

Question: what is meant by the phrase survival of the fittest?
A: way of describing the mechanism of natural selection