With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Charles, Prince of Wales was a grandchild of at least one wife of a king.
text_B: Charles , Prince of Wales -LRB- Charles Philip Arthur George ; born 14 November 1948 -RRB- is the eldest child and heir apparent of Queen Elizabeth II .. Prince of Wales. Prince of Wales. Elizabeth II. Elizabeth II. heir apparent. heir apparent. Elizabeth. Queen Elizabeth The Queen Mother. Known alternatively in South West England as Duke of Cornwall and in Scotland as Duke of Rothesay , he is the longest-serving heir apparent in British history , having held the position since 1952 .. heir apparent. heir apparent. South West England. South West England. Duke of Cornwall. Duke of Cornwall. Scotland. Scotland. Duke of Rothesay. Duke of Rothesay. He is also the oldest person to be next in line to the throne since Sophia of Hanover -LRB- the heir presumptive to Queen Anne -RRB- , who died in 1714 at the age of 83 .. Sophia of Hanover. Sophia of Hanover. heir presumptive. heir presumptive. Queen Anne. Queen Anne. Charles was born at Buckingham Palace as the first grandchild of King George VI and Queen Elizabeth .. Buckingham Palace. Buckingham Palace. George VI. George VI. Elizabeth. Queen Elizabeth The Queen Mother. He was educated at Cheam and Gordonstoun Schools , which his father , Prince Philip , Duke of Edinburgh , had attended as a child , as well as the Timbertop campus of Geelong Grammar School in Victoria , Australia .. Cheam. Cheam School. Gordonstoun. Gordonstoun. Geelong Grammar School. Geelong Grammar School. Victoria. Victoria ( Australia ). Australia. Australia. After earning a bachelor of arts degree from Trinity College , Cambridge , Charles served in the Royal Navy from 1971 to 1976 .. Royal Navy. Royal Navy. In 1981 , he married Lady Diana Spencer and they had two sons  : Prince William -LRB- born 1982 -RRB- later to become Duke of Cambridge , and Prince Harry -LRB- born 1984 -RRB- .. Lady Diana Spencer. Diana, Princess of Wales. Prince William. Prince William, Duke of Cambridge. Duke of Cambridge. Duke of Cambridge. Prince Harry. Prince Harry. In 1996 , the couple divorced , following well-publicised extramarital affairs .. Diana died in a car crash in Paris the following year .. died in a car crash. Death of Diana, Princess of Wales. In 2005 , Charles married Camilla Parker Bowles .. Camilla Parker Bowles. Camilla, Duchess of Cornwall. Charles 's interests encompass a range of humanitarian and social issues  : he founded The Prince 's Trust in 1976 , sponsors The Prince 's Charities , and is patron of numerous other charitable and arts organisations .. Charles has long championed organic farming for which he established the Duchy Home Farm , run by the Duchy of Cornwall , which produces ingredients for the Duchy Originals brand which he founded in 1990 .. organic farming. organic farming. Duchy Home Farm. Duchy Home Farm. Duchy of Cornwall. Duchy of Cornwall. Duchy Originals. Waitrose Duchy Organic. Charles has sought to raise world awareness of the dangers facing the natural environment , such as climate change .. climate change. climate change. As an environmentalist , he has received numerous awards and recognition from environmental groups around the world .. environmentalist. environmentalist. numerous awards and recognition. List of awards received by Charles, Prince of Wales. His support for alternative medicine , including homeopathy , has been criticised by some in the medical community .. alternative medicine. alternative medicine. homeopathy. homeopathy. He has been outspoken on the role of architecture in society and the conservation of historic buildings .. Subsequently , Charles created Poundbury , an experimental new town based on his theories , in Dorset in 1993 .. Poundbury. Poundbury. new town. new town. Dorset. Dorset. He has authored a number of books , including A Vision of Britain  : A Personal View of Architecture in 1989 and the children 's book The Old Man of Lochnagar in 1980 .. The Old Man of Lochnagar. The Old Man of Lochnagar
related.