With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Morena Baccarin was in the American film Stargate: The Ark of Truth.
text_B: Dye tracing is tracking and tracing various flows using dye added to the liquid in question .. flows. Fluid dynamics. dye. dye. liquid. liquid. That is , it uses dye as a flow tracer .. dye. dye. flow tracer. flow tracer. The purpose of tracking may be an analysis of the flow itself , of the transport of something by the flow of the objects that convey the flow .. It is an evolution of the ages-known float tracing method , which basically consists of throwing a buoyant object into a waterflow to see where it goes or where it emerges .. buoyant. buoyant. Dye tracking may be either qualitative , i.e. , the presence of particular flow and its estimate , or quantitative , when the amount of the traced dye is measured by special instruments .. dye. dye
not_related.