context: He was one of five siblings who survived to adulthood; his younger brother, Martin, became a major executive at Sam's companies.
source: Insull's career began as an apprentice clerk for various local businesses at age 14.
reference_original: La carriera di Insull cominciò come apprendista addetto per diverse aziende locali a 14 anni.
reference_flipped: La carriera di Insull cominciò come apprendista addetta per diverse aziende locali a 14 anni.