Complex sentence: Van Gogh courted Agostina Segatori, the owner of the Tambourin café on the boulevard de Clichy, for a period of time and gave her paintings of flowers, "which would last for ever".
Split into simpler sentences: Van Gogh courted Agostina Segatori, the owner of the Tambourin café on the boulevard de Clichy for a period of time. He used to give her paintings of flowers, "which would last for ever".