With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sabrina Carpenter has worked with a company.
text_B: Heavy melting steel -LRB- HMS -RRB- or heavy melting scrap is a designation for recyclable steel and wrought iron .. steel. steel. wrought iron. wrought iron. It is broken up into two major categories  : HMS 1 and HMS 2 , where HMS 1 does not contain galvanized and blackened steel , whereas HMS 2 does .. steel. steel. The Institute of Scrap Recycling Industries breaks up the categories further  :. Institute of Scrap Recycling Industries. Institute of Scrap Recycling Industries. ISRI 200 -LRB- HMS 1 -RRB-  : Wrought iron or steel scrap inch and larger in thickness .. steel. steel. All pieces must be smaller than 60 × 24 inches. ISRI 201 -LRB- HMS 1 -RRB-  : Same as ISRI 200 except pieces must be smaller than 36 × 18 in .. ISRI 202 -LRB- HMS 1 -RRB-  : Same as ISRI 200 except pieces must be smaller than 60 × 18 in .. ISRI 203 -LRB- HMS 2 -RRB-  : Wrought iron or steel scrap , black and galvanized , inch and larger in thickness .. steel. steel. ISRI 204 -LRB- HMS 2 -RRB-  : Same as ISRI 203 except pieces must be smaller than 36 × 18 in .. ISRI 205 -LRB- HMS 2 -RRB-  : Same as ISRI 204 except it may contain automotive scrap except for thin gauge material .. ISRI 206 -LRB- HMS 2 -RRB-  : Same as ISRI 205 except pieces must be smaller than 60 × 18 in .. HMS 1 and 2 are widely traded , particularly in the western hemisphere .. Both HMS 1 and 2 comprise obsolete scrap only .. That is iron and steel recovered from items demolished or dismantled at the end of their life .. steel. steel. Because both grades guarantee a minimum piece thickness -- at least 1 / 4 inch -LRB- 6.3 mm -RRB- for HMS 1 , and 1 / 8 in for HMS 2 -- consignments have a high density .. Both also have defined maximum dimensions -LRB- usually 60 in × 24 in -RRB- , and should be prepared to facilitate handling and charging to a furnace .. This density , sizing and preparation makes for efficient furnace operation by minimising the time to charge enough scrap for a full melt .. In contrast , thin mixed scrap greatly increases charging time , cutting furnace productivity .. Variations on maximum piece size are covered by ISRI -LRB- North America 's Institute of Scrap Recycling Industries -RRB- codes .. Institute of Scrap Recycling Industries. Institute of Scrap Recycling Industries. HMS is usually traded as a blend of 1 and 2 , either a premium blend -LRB- 80 :20 -RRB- or lower grade mixes -LRB- 70 :30 -RRB- and -LRB- 60 :40 -RRB- .. Other major heavy scrap grades include Japan 's H2 and A3 from the CIS .
not_related.