With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lonesome Dove (miniseries) won awards.
text_B: Passerine birds produce song through the vocal organ , the syrinx , which is composed of bilaterally symmetric halves located where the trachea separates into the two bronchi .. Passerine birds. Songbirds. syrinx. Syrinx ( biology ). bilaterally. human anatomical terms#Anatomical directions. trachea. Vertebrate trachea. bronchi. Bronchus. Using endoscopic techniques , it has been observed that song is produced by air passing between a set of medial and lateral labia on each side of the syrinx .. syrinx. Syrinx ( biology ). endoscopic. endoscopy. medial. human anatomical terms#Anatomical directions. lateral. human anatomical terms#Anatomical directions. Song is produced bilaterally , in both halves , through each separate set of labia unless air is prevented from flowing through one side of the syrinx .. syrinx. Syrinx ( biology ). bilaterally. human anatomical terms#Anatomical directions. Birds regulate the airflow through the syrinx with muscles -- M. syringealis dorsalis and M. tracheobronchialis dorsalis -- that control the medial and lateral labia in the syrinx , whose action may close off airflow .. syrinx. Syrinx ( biology ). medial. human anatomical terms#Anatomical directions. lateral. human anatomical terms#Anatomical directions. Song may , hence , be produced unilaterally through one side of the syrinx when the labia are closed in the opposite side .. syrinx. Syrinx ( biology ). unilaterally. human anatomical terms#Anatomical directions
not_related.