Magnetic field lines traced from two different source regions for an HMI magnetogram taken at 16:15 UT. Left column: magnetic field lines of the reconstructed brightest loop structure as traced from the location of one of the micro-flare kernels (B). Right column: magnetic field lines traced from micro-flare kernel C. The latter location corresponds to one of the footpoints of the filament flux rope. The red squares with connecting red lines show the starting location from which the magnetic field lines are traced. Top row background: log10(AIA 193 Å) images taken at 16:15 UT. Bottom row background: HMI magnetograms taken at 16:15 UT.