Gawai (Sarawak Rice Harvest Festival): Enlivened by rice wine, the Iban stage cockfighting and blowpipe contests.
At the Rice Harvest Festival people drink rice wine and stage blowpipe contests. 
mnli hypothesis: At the Rice Harvest Festival people drink rice wine and stage blowpipe contests.  premise: Gawai (Sarawak Rice Harvest Festival): Enlivened by rice wine, the Iban stage cockfighting and blowpipe contests.