Overview of AR 11476 on May 10, 2012. (a)–(b) HMI intensitygram and LOS magnetogram displaying the sunspots and the corresponding magnetic fields in the photosphere. (c)–(d) AIA 304 Å and 171 Å images showing the appearance of overlying structures. The arrows in (a)–(b) denote a pair of sunspots with opposite polarities, i.e., a bipole. The green arrows in (c)–(d) indicate a filament, and the white arrow in (d) denotes a set of large-scale loops.