what is the main common interests of the ibn al-banna' al-marrakushi and abu ma'shar al-balkhi ?
SELECT DISTINCT var_uri where brack_open dbr_Ibn_al-Banna'_al-Marrakushi dbp_mainInterests var_uri sep_dot dbr_Abu_Ma'shar_al-Balkhi dbp_mainInterests var_uri brack_close