Question: The fugitive hid from the police. What is the effect?

Answer: The fugitive remained at large.

Question: Air pollution in the city worsened. What is the cause?

Answer: Factories increased their production.

Question: The man signed the document. What is the effect?

Answer: The transaction became official.

Question: My knees buckled on the stairs. What is the effect?

Answer:
I caught myself on the railing.