With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Renewed activity in the mining sector , the source of most export income , boosted Kinshasa 's fiscal position and GDP growth from 2006 - 2008 , however , the government 's review of mining contracts that began in 2006 , combined with a fall in world market prices for the DRC 's key mineral exports temporarily weakened output in 2009 , leading to a balance of payments crisis .
text_B: 2006 is a calendar year
entailed.