Problem: Thereafter, in 1831, 1909, 1976, and 1998, and in numerous private copyright bills and temporary extensions of the copyright law and in repeated patent law revisions, Congress extended the terms of Federal copyright and patent protection of subsisting works.

Based on the paragraph above can we conclude that "The terms of Federal copyright  were not extended in 1830"?

A: Yes


Problem: The others gave in very soon , and longed to be friends , for now there was no Daisy to pet and cook for them ; no Nan to amuse and doctor them ; and , worst of all , no Mrs. Jo to make home life pleasant and life easy for them .<br>To their great affliction , Mrs. Jo seemed to consider herself one of the offended girls , for she hardly spoke to the outcasts , looked as if she did not see them when she passed , and was always too busy now to attend to their requests .

Based on the paragraph above can we conclude that "Nan was there to amuse them."?

A: No


Problem: Wilhelm Troszel (26 August 1823 - 2 March 1887) was a Polish composer and operatic bass. Born in Warsaw, he was the son of composer and piano maker Wilhelm Troschel. He made his stage debut at the Grand Theatre, Warsaw on 17 April 1843. At that theatre he notably created the role of Zbigniew in the world premiere of Stanisław Moniuszko's "The Haunted Manor" at the Grand Theatre, Warsaw in 1865.

Based on the paragraph above can we conclude that "Willhelm Troszel wasn't a real theatre student"?

A:
It's impossible to say