source: Who has lived longer in the USA, Ulli Lommel or Benjamin Stoloff?
allowed_tokens: ['higher than', 'same as', 'what ', 'and ', 'than ', 'at most', 'distinct', 'two', 'at least', 'or ', 'date', 'on ', '@@14@@', 'equal', 'hundred', 'Benjamin', 'those', 'sorted by', 'elevation', 'USA', 'which ', '@@6@@', 'was ', 'did ', 'population', 'height', 'one', 'that ', 'lived', 'on', 'did', 'who', 'true', '@@2@@', '100', 'false', 'and', 'was', 'who ', 'a ', 'Ulli', 'the', 'number of ', '@@16@@', 'Stoloff', 'if ', 'where', '@@18@@', 'how', 'larger than', 'is ', 'from ', 'a', 'for each', 'less', 'are ', '@@19@@', '@@4@@', '@@11@@', 'distinct ', 'to', 'not ', 'objects', 'with ', ', ', 'lowest', 'in', 'has ', 'zero', 'in ', 'there ', 'lower than', 'highest', '@@9@@', 'than', 'size', 'multiplication', 'with', 'besides ', ',', '@@1@@', 'what', 'have', 'those ', 'of', '@@3@@', 'that', 'there', '@@10@@', '@@5@@', 'both ', '@@15@@', 'number of', 'price', 'any', 'which', 'Lommel', 'to ', 'how ', 'when ', 'of ', 'longer', 'division', 'is', 'sum', 'or', 'if', 'more', '@@12@@', 'smaller than', 'flights', '@@7@@', '@@17@@', 'for each ', 'from', '@@13@@', 'Who', 'has', 'difference', 'when', 'are', 'any ', '@@8@@', 'both', 'the ', ',  ', 'besides', 'have ', 'where ', 'not']