Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The concept of matter has changed in response to new scientific discoveries. Thus materialism has no definite content independent of the particular theory of matter on which it is based. According to Noam Chomsky, any property can be considered material, if one defines matter such that it has that property.
The concept of matter has not changed for what reason?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Dreyfus writes that after the Phagmodrupa lost its centralizing power over Tibet in 1434, several attempts by other families to establish hegemonies failed over the next two centuries until 1642 with the 5th Dalai Lama's effective hegemony over Tibet.
What year did the 5th Dalai lama start to dominate over Tibet?
A: 1642

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
For example, the Italian and French words for various foods, some family relationships, and body parts are very similar to each other, yet most of those words are completely different in Spanish. Italian "avere" and "essere" as auxiliaries for forming compound tenses are used similarly to French "avoir" and "etre". Spanish only retains "haber" and has done away with "ser" in forming compound tenses. However, when it comes to phonological structures, Italian and Spanish have undergone less change than French, with the result that some native speakers of Italian and Spanish may attain a degree of mutual comprehension that permits extensive communication.[citation needed]
When forming compound tenses in Spanish, what auxiliary is no longer used?
A: sere

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
It was believed that immortality could be achieved if one reached the lands of the Queen Mother of the West or Mount Penglai. Han-era Daoists assembled into small groups of hermits who attempted to achieve immortality through breathing exercises, sexual techniques and use of medical elixirs. By the 2nd century AD, Daoists formed large hierarchical religious societies such as the Way of the Five Pecks of Rice. Its followers believed that the sage-philosopher Laozi (fl. 6th century BC) was a holy prophet who would offer salvation and good health if his devout followers would confess their sins, ban the worship of unclean gods who accepted meat sacrifices and chant sections of the Daodejing.
What type of religion did the society of the Way of the Five Pecks of Rice practice?
A:
Daoists