Problem: S1: The lyrics were written by the Lebanese singer Majida El Roumi and the music was rearranged by Kadim Al Sahir .
S2: The lyrics were rearranged by the Lebanese singer Majida El Roumi and music was written by Kadim Al Sahir .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Linguists sometimes posit that pidgins can become creole languages when a generation of children learn a pidgin as their first language ,
S2: Linguists sometimes claim that when a generation of children learn a pidgin as their first language , pidgins can become Creole languages .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: His second wife was Anna Williams , his first wife 's sister .
S2: His first wife was Anna Williams , sister of his second wife .

Do S1 & S2 convey the same information?

A:
no