A same meaning or not problem: OPTIONS:
- no
- yes
However , Szabo 's method of double-spending protection was vulnerable to Sybil attacks .
Szabo 's method of double protection was , however , vulnerable to Sybil attacks .
****
[A]: yes

Same meaning?
Souray married former WWE professional wrestler Barbara Blank , better known as Kelly Kelly in February 2016 . They have separated in October 2017 .
In February 2016 , Souray married the former WWE - professional - wrestler Kelly Kelly , better known as Barbara Blank , who separated in October 2017 .

OPTIONS:
- no
- yes

Answer: no

Problem: S1: A market was perceived for future tours and destinations , Scandinavia was in April 1975 and in September another tour followed in Switzerland .
S2: A market was perceived for future tours and destinations , Scandinavia followed in April 1975 and in September followed another tour to Switzerland .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: (1) These environments result from the regressive deposits in a cyclic series .
(2) These environments result from the regressive deposits in a cyclic row .

Do (1) and (2) mean the same thing?

OPTIONS:
- no
- yes
A: yes

Please check if these have the same meaning.
The first house , a Shanty , built Jacox from New York in 1830 in Clarkston .
Squatter Linux Jacox from Clarkston built the first house , a Shanty , in New York in 1830 .
OPTIONS:
- no
- yes
Answer: no

A same meaning or not problem: OPTIONS:
- no
- yes
First Presbyterian Church is located in 1702 Iowa Street , Davenport , Iowa Davenport , Iowa , United States .
First Presbyterian Church is located at 1702 Iowa Street , Davenport , Iowa Davenport , Iowa , United States .
****
[A]:
yes