This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: However, excessive hunting and poachers have also contributed heavily to the endangerment, extirpation and extinction of many animals, such as the quagga, the great auk, Steller's sea cow, the thylacine, the bluebuck, the Arabian oryx, the Caspian and Javan tigers, the markhor, the Sumatran rhinoceros, the bison, the North American cougar, the Altai argali sheep, the Asian elephant and many more, primarily for commercial sale or sport. All these animals have been hunted to endangerment or extinction. Question: What do Steller's sea cow, the bluebuck, and the Javan tigers all have in common?
extinction

Passage: Oskar Luts was the most prominent prose writer of the early Estonian literature, who is still widely read today, especially his lyrical school novel Kevade (Spring). Anton Hansen Tammsaare's social epic and psychological realist pentalogy Truth and Justice captured the evolution of Estonian society from a peasant community to an independent nation. In modern times, Jaan Kross and Jaan Kaplinski are Estonia's best known and most translated writers. Among the most popular writers of the late 20th and early 21st centuries are Tõnu Õnnepalu and Andrus Kivirähk, who uses elements of Estonian folklore and mythology, deforming them into absurd and grotesque. Question: What is the name of the book written by Anton Hansen Tammsaare?
Truth and Justice

Passage: During the summers at Nohant, particularly in the years 1839–43, Chopin found quiet, productive days during which he composed many works, including his Polonaise in A-flat major, Op. 53. Among the visitors to Nohant were Delacroix and the mezzo-soprano Pauline Viardot, whom Chopin had advised on piano technique and composition. Delacroix gives an account of staying at Nohant in a letter of 7 June 1842: Question: Who were two visitors to Chopin while in Nohant?

Delacroix and the mezzo-soprano Pauline Viardot