Instructions: In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Input: Context: Alexandria (or ; Arabic: '; '; "") is the second largest city and a major economic centre in Egypt, extending about along the coast of the Mediterranean Sea in the north central part of the country. Its low elevation on the Nile delta makes it highly vulnerable to rising sea levels. Alexandria is Egypt's largest seaport, serving approximately 80% of Egypt's imports and exports. It is an important industrial center because of its natural gas and oil pipelines from Suez. Alexandria is also an important tourist destination., Egypt (; ', , "Kimi"), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula. Egypt is a Mediterranean country bordered by the Gaza Strip and Israel to the northeast, the Gulf of Aqaba to the east, the Red Sea to the east and south, Sudan to the south, and Libya to the west. Across the Gulf of Aqaba lies Jordan, and across from the Sinai Peninsula lies Saudi Arabia, although Jordan and Saudi Arabia do not share a land border with Egypt. It is the world's only contiguous Afrasian nation., Alabarch is the Greek title of the customs official at the harbor of Alexandria during the Hellenistic and Roman periods. The title "alabarch" is different from the title of "ethnarch", which refers to the chief magistrate of a particular ethnic group within a city or territory., Alexander the Alabarch ( c. 10 BC -- unknown AD ) was an Alexandrian Jewish aristocrat . His brother was the exegete and philosopher Philo of Alexandria ., The Nile ( "en-Nl",  "an-Nl" "P(h)iaro"; Ancient Egyptian: "'p" and "Iteru"; Biblical Hebrew: , "Ha-Ye'or") is a major north-flowing river in northeastern Africa. It is generally regarded as the longest river in the world, however other conflicting sources cite a 2007 study that gave the title to the Amazon River in South America. The Nile, which is 6,853 km (4,258 miles) long, is an "international" river as its water resources are shared by eleven countries, namely, Tanzania, Uganda, Rwanda, Burundi, Congo-Kinshasa, Kenya, Ethiopia, Eritrea, South Sudan, Sudan and Egypt. In particular, the Nile is the primary water source of Egypt and Sudan., Ethnarch, pronounced , the anglicized form of ethnarches, refers generally to political leadership over a common ethnic group or homogeneous kingdom. The word is derived from the Greek words ("ethnos", "tribe/nation") and ("archon", "leader/ruler"). Strong's Concordance gives the definition of 'ethnarch' as "the governor (not king) of a district.", Subject: alexander the alabarch, Relation: position_held, Options: (A) 4 (B) governor (C) leader (D) libya (E) magistrate (F) ruler
Output:
governor