//p[matches(., 'sank', 'i') and matches(., 'ship', 'i')]|//p[matches(., 'collision', 'i') and matches(., 'ship', 'i')]|//p[matches(., 'sank', 'i') and matches(., 'collision', 'i')]|//p[matches(., 'collide', 'i') and matches(., 'ship', 'i')]|//p[matches(., 'sank', 'i') and matches(., 'collide', 'i')]|//p[matches(.