Question: Who was born later, Grégoire Maertens or Karl Litzmann?
Sentence (from "Grégoire Maertens"): Grégoire Maertens( born 1 January 1924) is a West- Flemish Esperantist who was a member of the" Estraro"( steering committee) for the UEA(" Universala Esperanto- Asocio" or World Esperanto Association) from 1977 until 1992.
Relevant evidence: Yes