I remember taking this. I had to answer something about socialism or marxism or whatever (I remember having to name the prominent socialist thinkers). This was in the 2000s, by the way. I got 3 points out of 5. I passed the other exams, math and English, perfectly, and that was not enough. I only got accepted due to personal recommendation of my scientific advisor. Since then I'm of the opinion that "Ph" is complete bullshit.