Problem: S1: His grandfather , Reverend Edna Graham Allan , was the first presenter of the Presbyterian General Assembly of New Zealand , who married Macky in Dunedin in 1920 .
S2: His grandfather , Reverend John Macky , was the first moderator of the Presbyterian General Assembly of New Zealand to marry Edna Graham Allan in Dunedin in 1920 .

Do S1 & S2 convey the same information?

A: no

Problem: S1: His second wife was Anna Williams , the sister of his first wife .
S2: His first wife was Anna Williams , the sister of his second wife .

Do S1 & S2 convey the same information?

A: no

Problem: S1: However , McKeithen Humphrey had supported Humphrey at the Democratic National Convention in Chicago in 1968 .
S2: Humphrey , however , supported McKeithen in 1968 at the Democratic National Convention in Chicago .

Do S1 & S2 convey the same information?

A:
no