Complex sentence: Henrich studied philosophy between 1946 and 1950 at Marburg, Frankfurt and Heidelberg, writing his dissertation under the supervision of Hans-Georg Gadamer.
Split into simpler sentences: Henrich studied philosophy between 1946 and 1950 at Marburg, Frankfurt and Heidelberg. He completed his PhD dissertation at Heidelberg in 1950 under the supervision of Hans-Georg Gadamer.