Simplify the following text for a Grade 9 native English-speaking person.
Original: His ashes are interred beneath a floor medallion in the middle of the foyer leading to the auditorium named for him within the Arthur Schomburg Center for Research in Black Culture in Harlem .
Simplified: His ashes are buried under the floor of the Langston Hughes Auditorium in the Arthur Schomburg Center for Research in Black Culture in Harlem .