A school garden team confirmed that the soil had dried after several windy days. The clause after that contained its own subject, soil, and verb, had dried, so that introduced the content of confirmed. The team then repaired the cover that the wind had damaged. In this sentence, the wind had damaged something; that filled the missing object position and linked the clause to cover. Finally, a student pointed to a nearby box and said, “That cover is heavier.” Here, that directly identified a noun. The same written form therefore served three different roles. A quick Korean translation could make the first two seem similar, but the structure revealed whether the following clause was complete, whether a noun before that was being modified, and whether that itself filled a sentence slot.