Passage: On 26 May 1917, Graf married Karoline Bretting. A year later, their daughter Annemarie (13 June 1918 – 2008), called Annamirl, was born. In the beginning of the same year, Graf was arrested for participating in a munitions workers' strike. He also met the woman who later became his second wife, Mirjam Sachs, the sister of Manfred George and a cousin of Nelly Sachs. In 1919, Graf was arrested again for participating in revolutionary movements in Munich.

Question: What happened to Graf after the munition strike?
Graf was arrested