With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Vince Vaughn appeared in the sci-fi adventure film The Lost World: Jurassic Park.
text_B: Waubonsie State Park is a state park of Iowa , US , located in the Loess Hills region .. state park. state park. Iowa. Iowa. Loess Hills. Loess Hills. It is named for Chief Wabaunsee of Potawatomi tribe .. Chief Wabaunsee. Chief Wabaunsee. Potawatomi. Potawatomi. Waubonsie State Park is located in the unique Loess Hills , a landform found only along the Missouri River in Iowa and Missouri .. Iowa. Iowa. Loess Hills. Loess Hills. Missouri River. Missouri River. Missouri. Missouri. As glaciers melted 14,000 to 28,000 years ago , the Missouri River became a major channel for huge volumes of water and sediment during the summer .. Missouri River. Missouri River. Missouri. Missouri. In winter , the volume of the meltwater was reduced , leaving the deposited sediments exposed to the wind .. These sediments of silt , clay and very fine sand particles called `` loess , '' were then carried by strong westerly winds and deposited when these winds encountered the steep slopes of the east valley wall .. There are several distinctive features of loess hills topography .. Because of the fine texture of the soil , deep , steep-sided and very narrow ridge tops have been eroded in the hills .. Small , step-like terraces called `` cat steps '' resulting from repeated slipping of the soil can be seen on many west-facing slopes .. Since the soil drains rapidly , nearly vertical cuts can be made in the soil without erosion .. The unique topography of the park resembles the `` badlands '' of the west and harbors plants like the yucca which are normally found in more arid climates .
not_related.