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who gave the name pearl of the orient seas
Father Juan J. Delgado, a Spanish Jesuit missionary, coined the phrase “Pearl of the Orient Seas” for the Philippines in 1751.
who wrote the poem with the phrase pearl of the orient
In his last poem Mi último adiós, Dr. José Rizal referred to the Philippines as the Pearl of the Orient.

Question: what does the phrase mean
Self-contained rewrite: what does the phrase pearl of the orient mean