Problem: If "John ordered Bill to leave, so an hour later he left.", is "Bill left." correct?

Answer: yes

Problem: If "Archaeologists have concluded that humans lived in Laputa 20,000 years ago. They hunted for deer on the river banks.", is "Archaeologists hunted for deer on the river banks." correct?

Answer: no

Problem: If "When Tatyana reached the cabin, her mother was sleeping. She was careful not to disturb her , undressing and climbing back into her berth.", is "She was careful not to disturb her mother , undressing and climbing back into her berth." correct?

Answer:
yes