Complex sentence: Joseph Haydn's "Symphony No.13 in D major" was written in 1763 for the orchestra of Haydn's patron, Prince Nikolaus Esterházy, in Eisenstadt.
Split into simpler sentences: Joseph Haydn's "Symphony No.13 in D major" was written in 1763. The piece was written for the orchestra of Haydn's patron, Prince Nikolaus Esterházy, in Eisenstadt.