Assertion: stent | /r/CapableOf | become four-cell
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Source sentences:
text: Only recently have stents become available such as the Mini Crown, beStent (4 crowns), Biodivysio SV (small vessels), six-cell BxVelocity, Multilink Pixel, 2.5-mm Carbostent four-cell, and small-vessel Pura Vario AS, which are designed to fit vessels