Assertion: lung cancer's stage | /r/HasProperty | stage iva
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Source sentences:
text: Stage IV lung cancer is divided into two stages: stage IVA and stage IVB.4,5,6,7,8 Stage IVA tumors have metastasized, either from one lung into the other lung, into the lung's lining (and have formed secondary nodules), into the heart's lining (and have formed secondary nodules), or into the fluid around the lungs or the heart; and/or tumors have spead to one site outside the chest area (e.g., adrenal gland or bones).