The time within which the evacuation of the Philippine Islands and Guam shall be completed shall be fixed by the two Governments. Stands of colors, uncaptured war-vessels, small arms, guns of all calibers, with their carriages and accessories, powder, ammunition, live stock, and materials and supplies of all kinds belonging to the land and naval forces of Spain in the Philippines and Guam remain the property of Spain. Pieces of heavy ordnance, exclusive of field artillery, in the fortifications and coast defenses, shall remain in their emplacements for the term of six months, to be reckoned from the exchange of ratifications of the treaty; and the United States may in the meantime purchase such material from Spain, if a satisfactory agreement between the two Governments on the subject shall be reached. Article VI. Spain will, upon the signature of the present treaty, release all prisoners of war and all persons detained or imprisoned for political offenses in connection with the insurrections in Cuba and the Philippines and the war with the United States. Reciprocally the United States will release all persons made prisoners of war by the American forces, and will undertake to obtain the release of all Spanish prisoners in the hands of the insurgents in Cuba and the Philippines. The Government of the United States will at its own cost return to Spain, and the Government of Spain will at its own cost return to the United States, Cuba, Porto Rico, and the Philippines, according to the situation of their respective homes, prisoners released or caused to be released by them, respectively, under this article. Article VII. The United States and Spain mutually relinquish all claims for indemnity, national and individual, of every kind, of either Government, or of its citizens or subjects, against the other Government, which may have arisen since the beginning of the late insurrection in Cuba, and prior to the exchange of ratifications of the present treaty, including all claims for indemnity for the cost of the war. The United States will adjudicate and settle the claims of its citizens against Spain relinquished in this article. Article VIII. In conformity with the provisions of Articles I, II, and III of this treaty, Spain relinquishes in Cuba and cedes in Porto Rico and other islands in the West Indies, in the island of Guam, and in the Philippine Archipelago all the buildings, wharves, barracks, forts, structures, public highways, and other immovable property which in conformity with law belong to the public domain and as such belong to the Crown of Spain.