With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Venus has a similar mass to Mars.
text_B: In pharmaceutics , micromixing is a process in which ingredient particles rearrange to form a blend .. pharmaceutics. pharmaceutics. blend. mixture. Development of pharmaceutical formulations requires understanding how the ingredients blend with each other and how the blending progresses through different stages .. blend. mixture. It is also important to establish in a scientific manner when the blending is considered complete , establishing the margins of blending performance , so that in production the blending is complete before the blending process stops .
not_related.