Question: Edoardo Ponti is the brother of which Italian orchestral conductor?

Context paragraphs:
Stefan Sanderling: Stefan Sanderling (born 2 August 1964 in East Berlin, East Germany) is an orchestral conductor.  He is the son of the conductor Kurt Sanderling and the double-bass player Barbara Sanderling.  His half-brother is the conductor Thomas Sanderling.  His brother Michael Sanderling is a cellist and conductor.

Jason Lai: Jason Lai (born 1974) is a British orchestral conductor.  He was assistant conductor of the BBC Philharmonic from 2002 to 2005.  At present he is the Associate Conductor with the Singapore Symphony Orchestra, Associate Conductor of the Hong Kong Sinfonietta, and Principal Conductor of the Conservatory Orchestra at the Yong Siew Toh Conservatory of Music which is part of the National University of Singapore.

Piero Gamba: Piero Gamba, also called Pierino Gamba (born 16 September 1936), is an Italian orchestral conductor and pianist.

Luigi Mancinelli: Luigi Mancinelli (] ; 5 February 1848, Orvieto – 2 February 1921, Rome) was a leading Italian orchestral conductor.  He also composed music for the stage and concert hall and played the cello.

Between Strangers: Between Strangers is a 2002 film, written and directed by Edoardo Ponti, son of Sophia Loren, the first time they worked together.

Guido Cantelli: Guido Cantelli (27 April 192024 November 1956) was an Italian orchestral conductor.  He was named Musical Director of La Scala, Milan in November 1956 but his promising career was cut short only one week later by his death at the age of 36 in an airplane crash in Paris, France.

Aurora (1984 film): Aurora is a 1984 Italian drama film directed by Maurizio Ponzi and starring Sophia Loren, Edoardo Ponti and Daniel J. Travanti.  In order to raise money for an operation for her son, a woman tells various former wealthy lovers that they are his father.  Its Italian title is Qualcosa di biondo.

Carlo Ponti (conductor): Carlo Ponti Jr. (born 29 December 1968) is an Italian orchestral conductor working in the United States.  He is the son of late film producer Carlo Ponti Sr. and Italian movie star Sophia Loren and he is the older brother of film director Edoardo Ponti.

Edoardo Ponti: Edoardo Ponti (born January 6, 1973) is an Italian director.  He is the son of actress Sophia Loren and producer Carlo Ponti, Sr. and the brother of conductor Carlo Ponti.

Ernesto Acher: Ernesto Acher (Buenos Aires, October 9, 1939) is an Argentine comedian, actor, composer, arranger, multi-instrumentalist and orchestral conductor.  Between 1971 and 1986 he was a member of the celebrated Argentine group Les Luthiers, with which he acted as composer, comedian, singer, and performer on more than twenty instruments, some of which he created himself.  Before separating from the group, he was involved in individual projects as composer – including a soundtrack, a quartet for clarinet and strings, a string sextet and a symphonic poem for viola and orchestra.  In 1988 he founded the La Banda Elástica (The Elastic Band), gathering some of the most outstanding Argentine jazz musicians.  The band dissolved in 1993.  Since then he has developed several musical and comedy projects, and performed as an orchestral conductor.

Supporting paragraphs: Edoardo Ponti Carlo Ponti (conductor)
Answer: Carlo Ponti Jr.