With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Frank Sinatra toured North America.
text_B: Puddingstone , also known as either pudding stone or plum-pudding stone , is a popular name applied to a conglomerate that consists of distinctly rounded pebbles whose colors contrast sharply with the color of the finer-grained , often sandy , matrix or cement surrounding them .. conglomerate. conglomerate ( geology ). The rounded pebbles and the sharp contrast in color gives this type of conglomerate the appearance of a raisin or Christmas pudding .. conglomerate. conglomerate ( geology ). Christmas pudding. Christmas pudding. There are different types of puddingstone , with different composition , origin , and geographical distribution .. Examples of different types of puddingstones include the Hertfordshire , Schunemunk , Roxbury , and St. Joseph Island -LRB- Drummond Island -RRB- puddingstones .
not_related.