“While reading articles, I came across this sentence. Why?” “Mr. Rafsanjani, 82, was also regarded as a protector of what was left of Iran’s marginalized reformist movement and others with more moderate views than the conservative hard-line clerics who hold sway in Iran’s security forces and judiciary.” “What is this sentence for?” “Does it serve as a relative clause modifying the \”protector\”?” “How can a student learn English?”