Complex sentence: In 1898 the French astronomers Camille Flammarion and Eugene Antoniadi investigated the mediumship of Palladino at the house of Flammarion and came to the conclusion that her performance was "fraud from beginning to end".
Split into simpler sentences: In 1898 the French astronomer Eugene Antoniadi investigated the mediumship of Palladino at the house of Camille Flammarion. According to Antoniadi her performance was "fraud from beginning to end".