Three students from Forestry University Liu Wei, Li Gang, and Wu Qiang went to the mountains to plant trees. They planted three trees in total: a poplar tree, a pine tree, and a locust tree. It is reported that Liu Wei did not plant poplar trees, and Li Gang did not. Planting locust trees, Wu Qiang has neither planted poplar nor locust trees. Can we know from this? ['Liu Wei planted pine trees, Li Gang planted poplar trees, and Wu Qiang planted locust trees.', 'Liu Wei planted locust tree, Li Gang planted poplar tree, Wu Qiang planted a pine tree.', 'Liu Weizhi poplar tree, Li Gang plant locust tree, Wu Qiang plant pine tree.', 'Liu Wei planted locust tree, Li Gang planted a pine tree, Wu Qiang planted poplar tree.']