source: After graduation he returned to Yerevan to teach at the local Conservatory and later he was appointed artistic director of the Armenian Philarmonic Orchestra.
target: After graduation he returned to Yerevan to teach at the conservatory. Later he was appointed artistic director of the Armenian Philarmonic Orchestra.
references: After graduation he returned to Yerevan to teach at the conservatory. Later he was appointed artistic director of the Armenian Philarmonic Orchestra. After graduation, he came back to Yerevan to teach at the local Conservatory. He later became artistic director of the Armenian Philarmonic Orchestra. After finishing school he went back to Yerevan to teach at the local Conservatory and later became leader of the American Philharmonic Orchestra. After he graduated he went back to Yerevan.  In Yerevan he taught at the local Conservatory.  Later he became artistic director of the Armenian Philharmonic Orchestra. After graduation he returned to Yerevan to teach at the local Conservatory and later became director of the Armenian Philarmonic Orchestra After graduation, he returned to Yerevan to teach at the local music college and later he was appointed as artistic director of the Armenian Philarmonic Orchestra. He returned to Yerevan after graduation to teach at the local Conservatory.  He was later appointed artistic director of the Armenian Philarmonic Orchestra. After graduating he returned to Yerevan to teach at the local Conservatory and later was made the artistic director of the Armenian Philharmonic Orchestra. After graduation, he went back to Yerevan to teach and was later appointed director of the Armenian Philarmonic Ochestra. He taught at the local Conservatory. He became the artistic director of the Armenian Philarmonic Orchestra.