sentence1: He began his studies in 1946 at the Main Reformed Gimnázium in Debrecen , and from 1947 to 1951 , he attended the Madách Gimnázium in Budapest .
sentence2: He began his studies in 1946 at the Reformed Gimnázium in Debrecen and from 1947 to 1951 he visited Madách Gimnázium in Budapest .