What is the 3utr sequence when the genbank id is hq021437? 
{'header': ['Variant id', '5’UTR splice', 'Coding', '3’UTR sequence', 'GenBank id'], 'page_title': 'Pulmonary surfactant-associated protein A1', 'section_title': 'SFTPA1 mRNA transcript variants', 'caption': 'SFTPA1 mRNA transcript variants', 'rows': [["AD'6A", 'AD’', '6A', '6A', 'HQ021433'], ["AD'6A 2", 'AD’', '6A 2', '6A 2', 'HQ021434'], ["AD'6A 3", 'AD’', '6A 3', '6A 3', 'HQ021435'], ["AD'6A 4", 'AD’', '6A 4', '6A 4', 'HQ021436'], ["AB'D'6A", "AB'D’", '6A', '6A', 'JX502764'], ["AB'D'6A 2", "AB'D’", '6A 2', '6A 2', 'HQ021437'], ["AB'D'6A 3", "AB'D’", '6A 3', '6A 3', 'HQ021438'], ["AB'D'6A 4", "AB'D’", '6A 4', '6A 4', 'HQ021439'], ["ACD'6A", 'ACD’', '6A', '6A', 'JX502765'], ["ACD'6A 2", 'ACD’', '6A 2', '6A 2', 'HQ021440'], ["ACD'6A 3", 'ACD’', '6A 3', '6A 3', 'HQ021441'], ["ACD'6A 4", 'ACD’', '6A 4', '6A 4', 'HQ021442'], ['SFTPA1 variant 1', "AB'D’", '6A 3', '6A 3', 'NM_005411.4'], ['SFTPA1 variant 2', 'ACD’', '6A 3', '6A 3', 'NM_001093770.2'], ['SFTPA1 variant 3', 'ABD’', '6A 3', '6A 3', 'NM_001164644.1'], ['SFTPA1 variant 4', 'AD’', '6A 3', '6A 3', 'NM_001164647.1'], ['SFTPA1 variant 5', 'ACD’', '6A 3 (truncated)', '6A 3', 'NM_001164645.1']]}