Problem: If "The scientists are studying three species of fish that have recently been found living in the Indian Ocean. They began two years ago.", is "The fish began two years ago." correct?

Answer: no

Problem: If "The signs over the shops' doors had pictures that indicated what work was done inside. Although more and more people were learning how to read, each artisan still had signs, not wishing to lose a possible patron merely because he happened to be illiterate.", is "Each artisan still had signs, not wishing to lose a possible patron merely because the artisan happened to be illiterate." correct?

Answer: no

Problem: If "It was a summer afternoon, and the dog was sitting in the middle of the lawn. After a while, it got up and moved to a spot under the tree, because it was cooler.", is "The dog was cooler." correct?

Answer:
no