Problem: S1: In 1974 , he won the positions of Concertmaster of the Boston Symphony and Associate Concertmaster of the Boston Pops , where he spent 11 years .
S2: In 1974 he won the positions of the concertmaster of the Boston Symphony and the Associate Concertmaster of the Boston Pops , where he spent 11 years .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The outlaws decided to live off the poor class of people instead of the wealthy .
S2: The outlaws chose to live off the wealthy class of people instead of the poor .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Adult birds have black bodies with a white wing patch , a thin dark bill , and red legs and feet .
S2: Adult birds have white bodies with a black spot , a thin dark bill and red legs and feet .

Do S1 & S2 convey the same information?

A:
no