Expert System - Australian Flags by McGoo Software

Based on the responses you have made:

The flag is most probably the Aboriginal Flag

Conclusion Notes:

The Aboriginal Flag was designed by Harold Thomas, an artist and an Aboriginal, in 1971. The flag was designed to be an eye-catching rallying symbol for the Aboriginal people and a symbol of their race and identity. The black represents the Aboriginal people, the red the earth and their spiritual relationship to the land, and the yellow the sun, the giver of life. In the late 1960s, Aborigines stepped up their campaign for indigenous land rights through protest marches, demonstrations, banners and posters. The protests increased in the early 1970s and Harold Thomas noticed they were often outnumbered by non-Aborigines with their own banners and placards. He decided they needed to be more visible and the idea of the flag was born. The Aboriginal flag was first raised in Victoria Square in Adelaide on National Aboriginal Day in 1971, but was adopted nationally by Aborigines and Torres Strait Islanders in 1972 after it was flown above the Aboriginal "Tent Embassy" outside of the old Parliament House in Canberra. Mr Thomas has often been asked to design a new Australian flag, but he says the design of the Aboriginal flag "sprung from passionate times" and that his inspiration could not necessarily "be repeated" for a new Australian flag. Mr Thomas says he would prefer to see something different for a new Australian flag.

Expert System Rule:

IF on the flag the Southern Cross is not visible
AND on the flag there is no Union Jack present
AND the field of the flag is red and black horizontal sections
THEN the flag is most probably the Aboriginal Flag.

Calculated Certainty Factor: 0.78 = most probably