With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Australia is a country in the Pacific Ocean.
text_B: Stylidium subg .. Stylidium. Stylidium. Centridium is a subgenus of Stylidium that is characterized by a globose hypanthium , a stipitate brush-like stigma , and gynostemium mobility not produced by a sensitive hinged torosus but by the movement of a cunabulum .. Stylidium. Stylidium. subgenus. subgenus. All species with the possible and doubtful exception of S. weeliwolli are annuals .. This subgenus appears to be most closely related to the genus Levenhookia , which suggests an ancestral relationship .. subgenus. subgenus. Levenhookia. Levenhookia. Centridium was first published by John Lindley in the 1839 publication , A Sketch of the Vegetation of the Swan River Colony .. John Lindley. John Lindley. A Sketch of the Vegetation of the Swan River Colony. A Sketch of the Vegetation of the Swan River Colony. Lindley created this subgenus to distinguish species which did not fit into either of the two other subgenera that had existed at the time .. subgenus. subgenus. He initially placed Stylidium calcaratum , the newly described Stylidium androsaceum , and Stylidium stipitatum into subgenus Centridium .. Stylidium calcaratum. Stylidium calcaratum. Stylidium. Stylidium. subgenus. subgenus. Stylidium androsaceum. Stylidium androsaceum. Stylidium stipitatum. Stylidium stipitatum. His description of S. androsaceum turned out to be synonymous with S. calcaratum and S. stipitatum is a synonym of Levenhookia stipitata .. Levenhookia. Levenhookia. Levenhookia stipitata. Levenhookia stipitata
not_related.