With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Matthew Modine retired from acting in 1980.
text_B: Dropsonde is an ambient album by musician Biosphere -LRB- alias Geir Jenssen -RRB- .. Biosphere. Biosphere ( musician ). ambient. Ambient music. Unlike his previous output , there is a notable jazz influence present on this album .. jazz. jazz
not_related.