Question: Was the Lighthouse of Alexandria finished by the son of a king?, Answer:Yes, Description of Lighthouse of Alexandria: Ancient lighthouse in Egypt, Fact1: Ptolemy II Philadelphus was king from 28 March 284 – 28 January 246, Fact2: Ptolemy II Philadelphus was the son of Ptolemy I Soter, Fact3: Ptolemy I Soter was king from 305/304 – 282 BC, Fact4: The Lighthouse of Alexandria's construction was completed during the reign of Ptolemy II Philadelphus
Step1: Who ordered the construction of the Lighthouse of Alexandria?, Step2: Did #1 rule over a kingdom?, Step3: Who was the ruler when the Lighthouse of Alexandria was completed?, Step4: Is #2 the father of #3?, Wikipedia page for step 1: Lighthouse of Alexandria, Wikipedia page for step 2: Ptolemy I Soter, Wikipedia page for step 3: Lighthouse of Alexandria, Wikipedia page for step 4: Ptolemy II Philadelphus, not_definitive_answer: False, incorrect_answer: False