Text: A guided boat trip will also give an excellent introduction, displaying in leisurely fashion ' and with informative commentary ' sites including the Eiffel Tower, the Palais de Chaillot and Trocad??ro Gardens, the Grand and Petit Palais, the Palais Bourbon, the Louvre, Notre-Dame, and of course many of the beautiful bridges.
Entailment: Commentary on the Eiffel Tower can be received on guided boat trips.
Contradiction: The Palais de Chaillot isn't one of the sites seen on the guided boat tour.