Original: Following the death of Friedrich Ebert in February , 1925 he held the office of temporary President of the Weimar Republic from 12 March , 1925 until 12 May , 1925 when the next president , Paul von Hindenburg , was elected and assumed office .
Simplified: After the death of Friedrich Ebert in February , 1925 he was acting president of the Weimar Republic from 12 March , 1925 until 12 May , 1925 when the next president , Paul von Hindenburg , was elected and assumed office .