What is {doctoral advisor} and {doctoral thesis} of {{Angela Merkel} has {educated at} as {German Academy of Sciences at Berlin}}
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SELECT ?j ?a WHERE { ?y property:educated_at resource:German_Academy_of_Sciences_at_Berlin . ?y property:doctoral_advisor ?j . resource:Angela_Merkel property:educated_at ?y . ?y property:academic_thesis ?a }
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