Problem: S1: She worked on processes of chemical extraction of metal complexes and described the chemical and physical properties of solvent species in an organic solvent .
S2: She worked on processes of chemical extraction of metal complexes and described the chemical and physical properties of solvent types in an organic solvent .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The music was composed by G. Ramanathan , while the lyrics were written by T. K. Sundara Vathiyar and Rajagopala Iyer .
S2: Music was composed by G. Ramanathan while the lyrics were penned by T. K. Sundara Vathiyar and Rajagopala Iyer .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Or the Egg object could use properties and instead use methods .
S2: Or the Egg object could use properties , and invoke methods instead

Do S1 & S2 convey the same information?

A:
yes