Q: .

We went to the lake , because a shark had been seen at the ocean beach , so *it* was a dangerous place to swim.

Do "it" and "the ocean beach" mean the same thing?
A: yes
Q: .

At the Loebner competition the judges couldn't figure out which respondents were the chatbots because *they* were so advanced.

Do "they" and "the judges" mean the same thing?
A: no
Q: .

In July, Kamtchatka declared war on Yakutsk . Since Yakutsk 's army was much better equipped and ten times larger, *they* were defeated within weeks.

Do "they" and "Yakutsk" mean the same thing?
A:
no