With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Yamaha Corporation produces hardware.
text_B: Mohan Priyadarshana De Silva -LRB- born 23 December 1966 -RRB- is a Sri Lankan politician and member of the Parliament of Sri Lanka .. Sri Lanka. Sri Lanka. Parliament of Sri Lanka. Parliament of Sri Lanka. He belongs to the Sri Lanka Freedom Party .. Sri Lanka Freedom Party. Sri Lanka Freedom Party. Sri Lanka. Sri Lanka. Mohan P. de Silva is a lawyer by profession and was educated at St. Aloysius ' College , Galle .. Galle. Galle
not_related.