With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Furious 7 began filming in the 2010s.
text_B: An overlap zone , in radio frequency engineering , is a zone in which the signals from two or more radio stations , transmitting at the same frequency , can be received with comparable intensity .. radio frequency engineering. radio frequency engineering. Interference occurs frequently in such a zone .. Interference. Co-channel interference. In order to avoid this , a receiver with directional antenna is used , which can then be aligned in such a way that it will only receive the signal of one transmitter .. directional antenna. directional antenna. Alternatively , the signals could be separated using a demodulator in single sideband mode .. single sideband mode. single sideband. With digital radio -LRB- Digital Radio Mondiale and Digital Audio Broadcasting being two common types -RRB- , there is no interference in the overlap zone .. digital radio. digital radio. Digital Radio Mondiale. Digital Radio Mondiale. Digital Audio Broadcasting. Digital Audio Broadcasting. Category  : Broadcast engineering. Category  : Radio resource management
not_related.