Which waterfall is located in South America and is the tallest natural waterfall in the world?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q18', 'id': 0, 'label': 'South America'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q27611', 'id': 1, 'label': 'Central America'}], 'links': [{'name_': 'P47', 'source': 0, 'target': 1, 'label': 'shares border with'}, {'name_': 'P47', 'source': 1, 'target': 0, 'label': 'shares border with'}]}
South America and Central America share a border.
South America and Central America are both located in the same country .
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America and [unused1]Central America                [unused2] share a border.
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America and Central America share a border.
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America and [unused1]Central America                [unused2] are both located in the same country .
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America and Central America are both located in the same country .
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America,0,South America,South America,shares border with,[unused1]Central America[unused2],[unused1]Central America[unused2],shares border with,South America,[unused1]Central America[unused2],0,[unused1]Central America[unused2]
Which waterfall is located in South America and is the tallest natural waterfall in the world?</s>South America,0,South America,South America,shares border with,Central America,Central America,shares border with,South America,Central America,0,Central America