The memory device has constituent cells which include a structural phase-change material to store the cells data. The electric angle ranges between 25\xb0 and 36\xb0 at said interconnection points. The elements of the relationship graph include nodes representing entities and edges representing relationships between entities. A setting unit sets, on the radio link, a connection with the second radio terminal. A user may select the datasets that the composite API accesses andor the composite API may require certain specific datasets. The carrier transmission layer includes an active layer and a mobility enhancement layer.