Question. Context: A Tale of Two Cities (1859) is a novel by Charles Dickens, set in London and Paris before and during the French Revolution. The novel tells the story of the French Doctor Manette, his 18-year-long imprisonment in the Bastille in Paris and his release to life in London with his daughter Lucie, whom he had never met; Lucie's marriage and the collision between her beloved husband and the people who caused her father's imprisonment; and Monsieur and Madame Defarge, sellers of wine in a poor suburb of Paris. The story is set against the conditions that led up to the French Revolution and the Reign of Terror.

Question: where does a tale of two cities take place?
Answer. London and Paris
What step-by-step reasoning justifies that answer?
Reasoning: To answer this question, we should know that: A Tale of Two Cities (1859) is a novel by Charles Dickens, set in London and Paris before and during the French Revolution.