Problem: S1: When maximum concentrations are reached , there may be a delay of one or two days before toxic toxicity occurs .
S2: If maximum concentrations are reached , there may be a delay of one or two days before toxic toxicity occurs .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Chief Arthur V. Watkins wrote Utah Senator Pabawena in 1949 to report :
S2: Arthur V. Watkins wrote Utah - Senator Pabawena in 1949 to report :

Do S1 & S2 convey the same information?

A: yes

Problem: S1: His father , Francis , was a cousin and his mother , Martha , the half-sister to Elizabeth ' s late mother , Maria .
S2: His father Francis was a cousin and his mother Martha the half-sister to Elizabeth 's late mother Maria .

Do S1 & S2 convey the same information?

A:
yes