Q: The octet rule is a chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electron configuration as a noble gas. The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens, but also to metals such as sodium or magnesium.
Can we conclude that does the octet rule apply to all elements?
A: no

Q: The Wars of the Three Kingdoms, sometimes known as the British Civil Wars, formed an intertwined series of conflicts that took place in the kingdoms of England, Ireland and Scotland between 1639 and 1651. The English Civil War proper has become the best-known of these conflicts; it included abolishing the monarchy and executing the kingdom's monarch, Charles I, by the English parliament in 1649.
Can we conclude that have scotland and ireland ever been at war?
A: yes

Q: A League of Their Own is a 1992 American sports comedy-drama film that tells a fictionalized account of the real-life All-American Girls Professional Baseball League (AAGPBL). Directed by Penny Marshall, the film stars Geena Davis, Tom Hanks, Madonna, Rosie O'Donnell, and Lori Petty. The screenplay was written by Lowell Ganz and Babaloo Mandel from a story by Kelly Candaele and Kim Wilson.
Can we conclude that is the movie a league of their own true?
A: no

Q: Further work on the system showed that the orbits proposed for the candidate planets were catastrophically unstable on timescales far shorter than the age of the system. Indeed, the authors found that the system was so unstable that it simply cannot exist, with mean lifetimes of less than a thousand years across the whole range of plausible orbital solutions. Like other planetary systems proposed around similar evolved binary star systems, it seems likely that some mechanism other than claimed planets is responsible for the observed behaviour of the binary stars - and that the claimed planets simply do not exist.
Can we conclude that planetary orbits around stars in binary systems are always unstable?
A:
yes