Original: It consists of two islands : São Tomé and Príncipe , located about 140 kilometres ( 87 mi ) apart and about 250 and 225 kilometres ( 155 and 140 mi ) , respectively , off the northwestern coast of Gabon .
Simplified: They are located about 140 km apart and about 250 and 225 km , respectively , off of the northwestern coast of Gabon .