Problem: (1) Friedrich Wilhelm had two brothers : Friedrich Heinrich Albrecht ( 1874 - 1940 ) and Joachim ( 1880 - 1925 ) .
(2) Joachim had two brothers : Friedrich Heinrich Albrecht ( 1874 -- 1940 ) and Friedrich Wilhelm ( 1880 -- 1925 ) .

Do (1) and (2) mean the same thing?
A: no

Problem: (1) The tubular heart or the primitive heart tube is the earliest stage of heart development .
(2) The primitive heart or tube-shaped heart tube is the earliest stage of heart development .

Do (1) and (2) mean the same thing?
A: yes

Problem: (1) Polymers of the coordination type are also stereoregular and can be isotactic or syndiotactic instead of atactic .
(2) Coordination type polymers are also atactic and can be isotactic or syndiotactic , instead of just stereoregular .

Do (1) and (2) mean the same thing?
A: no

Problem: (1) The yellow tetra is found around southeastern Brazil and Parana River basin in costal rivers .
(2) The Costal Tetra is found around southeastern Brazil and Parana river basins in yellow rivers .

Do (1) and (2) mean the same thing?
A:
no