Although Fresnel did not know that light waves are electromagnetic , he managed to construct the first coherent light theory in the world .
Although Fresnel did not know that electromagnetic waves are light , he managed to construct the first coherent theory of light in the world .

Are these two sentences paraphrases of each other? OPTIONS:
- no
- yes
no

1. On 22 December 2015 , the successor rocket , the Falcon 9 , successfully brought its first stage on its twentieth flight for the first time .
2. The successor rocket , the Falcon 9 , landed its first stage successfully on land for the twentieth time on its first flight , on December 22 , 2015 .
OPTIONS:
- no
- yes

no

A same meaning or not problem: OPTIONS:
- no
- yes
Among the musicians of the recording session on March 7 were Hal Blaine ( drums ) , Al Casey ( guitar ) , Larry Knechtel ( bass ) and Don Randi ( piano ) .
The musicians of the recording session on 7 March included Larry Knechtel ( drums ) , Hal Blaine ( guitar ) , Don Randi ( bass ) and Al Casey ( piano ) .
****
[A]: no

Same meaning?
In February 2011 , Cenveo Corporation sold its Envelope Products business , including the Columbian Brand Envelope , to the Quality Park Envelope Products Group of MeadWestvaco .
In February 2011 , Cenveo Corporation sold its Envelope Products Business including the Columbian Brand Envelope to MeadWestvaco 's Quality Park Envelope Products Group .

OPTIONS:
- no
- yes

Answer: yes

Problem: S1: In 2005 , Dieudonne and Jean-Christophe Jeauffre founded the French version of the American nonprofit company Jules Verne Adventures .
S2: In 2005 Dieudonne and Jean-Christophe Jeauffre founded the American version of the French nonprofit Jules Verne Adventures .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: no

After a while , Miao Yu Jia left the band and was replaced in August 2008 by Wang Di .
After a while , Miao Yu Jia left the band and was replaced by Wang Di in August 2008 .

Are these two sentences paraphrases of each other? OPTIONS:
- no
- yes
yes