1.   Tribesmen have often targeted the Hunt oil line in the past, mostly to try to force the government to improve services to the area.

2.   Tribesmen have targeted the Hunt Oil line in the past, mostly to try to force the government to improve services to the area.

3.   Tribesmen have targeted the Hunt Oil line in the past.

4.   Tribesmen often target the Hunt oil line, mostly to try to force the government to improve services to the area.