input.txt

1 day AND week AND month AND year [79, 180, 181, 200, 278, 319, 331, 342, 350, 359, 386, 419, 862, 916, 925, 969, 1535, 1616, 1870, 1878, 1889, 1968, 2197, 2228, 2310, 2508, 2697, 2775]
1 oil AND price AND final [2068, 2251, 2383]
1 national AND strike [209, 309, 1867, 1916, 2326, 2542, 2618, 2632, 2775, 2828, 2971]

2 national strike [309, 2828, 2971]
2 united states [44, 181, 208, 263, 280, 340, 348, 354, 393, 489, 502, 584, 656, 688, 771, 843, 854, 925, 950, 965, 1022, 1036, 1099, 1110, 1197, 1201, 1269, 1289, 1290, 1392, 1499, 1533, 1574, 1579, 1605, 1625, 1662, 1668, 1731, 1777, 1796, 1809, 1834, 1848, 1951, 1963, 2052, 2074, 2078, 2229, 2286, 2307, 2352, 2359, 2362, 2383, 2390, 2406, 2503, 2523, 2553, 2633, 2640, 2786, 2840, 2862, 2879, 2883, 2891, 2894, 2936, 2992]
2 middle east [1021, 1093, 1693, 1990]

3 middle /0 east [1021, 1093, 1693, 1990]
3 bank /6 bill [258, 268, 300, 341, 411, 425, 953, 1008, 1053, 1115, 1275, 1720, 1806, 1943, 1976, 2022, 2502, 2565, 2576, 2739]
3 offer /2 term [304, 854, 965, 1275]
3 apple /5 macintosh /10 computer [367, 385, 823]