context: He finished in seventh position with the Dutch Men's Water Polo Team at the 1972 Summer Olympics in Munich.
source: Since 2003, Hermsen is a professor at the University of Amsterdam in Astrophysics.
reference_original: Desde 2003, Hermsen es profesor de Astrofísica en la Universidad de Ámsterdam.
reference_flipped: Desde 2003, Hermsen es profesora de Astrofísica en la Universidad de Ámsterdam.