Complex sentence: Joaquín Sorolla y Bastida (February 27,1863--August 10,1923) was a Spanish painter, born in Valencia, who excelled in the painting of portraits, landscapes, and monumental works of social and historical themes.
Split into simpler sentences: Joaquín Sorolla y Bastida (27 February 1863--10 August 1923) was a Spanish painter. Sorolla excelled in the painting of portraits, landscapes, and monumental works of social and historical themes.