Task: Pos Tagging
Input (English): Sentence: we have made a furnace as such , we took a clay flower pot with a hole in the bottom put a piece of steel pipe in the middle of it with a cap on the bottom , filled the pipe with brass scrap , surounded the pipe with charcoal lit it off and pumped air through the hole in the pot , everything got red hot but {{ did }} not melt . 
Word: did
Output (English): AUX