Sentence 1: American business has regained its competitive edge by reengineering its business practices to improve their effectiveness and, in the process, downsize their inhouse staff.

Sentence 2: American businesses have regained their competitive edge solely by increasing their own efficiency.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Well, so long.

Sentence 2: At last, farewell.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: The facades of elegant houses on the north side were designed by Adam and have changed little since they were finished in 1805.

Sentence 2: The facades of the houses designed by Adam has undergone just one renovation since 1805.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer:
it is not possible to tell