Problem: S1: The Sabres specialized in instrumental music and early rock artists like the aforementioned Dale Hawkins , The Ventures and Chuck Berry .
S2: The Sabres specialized in instrumental music and early rock artists like the afore-mentioned Chuck Berry , The Ventures and Dale Hawkins .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: Scientific research is most often not the '' main '' goal for many amateur astronomers , unlike professional astronomers .
S2: For many amateur astronomers , unlike professional astronomers , scientific research is usually not the '' main goal '' .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: This time the vocals were presented by Matti Auerkallio and the EP by Pirkka Rannali was mastered .
S2: This time the vocals were performed by Matti Auerkallio , and the EP was mastered by Pirkka Rannali .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A:
yes