text: After this treaty was signed in the Jerónimos Monastery, its signatories took a ride in an electric tram together as a show of unity.
full_question: After this treaty was signed in the Jerónimos Monastery, its signatories took a ride in an electric tram together as a show of unity. A second referendum on this treaty was controversially held in Ireland, resulting in its acceptance after it was initially rejected by voters. This 2007 treaty set the maximum number of MEPs at 750 and created Article 50, which allows for the withdrawal process that Brexiteers seek to implement. For 10 points, name this treaty which amended the EU Constitution created in the Maastricht treaty, and which is named for the capital of Portugal.
first_sentence: After this treaty was signed in the Jerónimos Monastery, its signatories took a ride in an electric tram together as a show of unity.