英国石油公司

• 囗(surround; enclose)RADICAL
• 玉(precious jade; gem)ASSOCIATIVE

A nation is enclosed land that contains precious treasures within.

• 氵(water; liquid)RADICAL
• 由(from; due to; oil (phonetic))PHONO-SEMANTIC

Oil is a liquid that flows from a natural source.

• 八(eight; split in two)RADICAL
• 厶(private; personal)ASSOCIATIVE

Public means sharing your private things with everyone to become shared property.