Problem: S1: Later that day , both the JMA and the JTWC have upgraded the depression to a tropical storm .
S2: Later that day both the JTWC & the JMA upgraded the depression to a tropical storm .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Potter married in 1945 . He and his wife Anne ( a weaver ) had two children , Julian ( born 1947 ) and Mary ( born 1952 ) .
S2: He and his wife Mary ( a weaver ) had two children , Anne ( born 1947 ) and Julian ( born in 1952 ) .

Do S1 & S2 convey the same information?

A: no

Problem: S1: This means that Lisp is homoiconic , that is , the primary representation of programs is also a data structure in a primitive type of the language itself .
S2: This means that Lisp is homoiconic , that is , the primary representation of programs is also a data structure in a primitive type of language itself .

Do S1 & S2 convey the same information?

A:
yes