Question: name an element of group 18 which can form compounds
[{'answer': 'xenon', 'provenance': [{'wikipedia_id': '435089', 'title': 'Noble gas compound', 'start_paragraph_id': 1, 'start_character': 256, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '435089', 'title': 'Noble gas compound', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 546, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11969917358039608516}, 'section': 'Section::::Abstract.'}]}]