知る, 識る, しる
Conjugated: 知っている
Godan verb, Transitive
1. to be aware of, to know, to be conscious of, to cognize, to cognise
2. to notice, to feel
3. to understand, to comprehend, to grasp
4. to remember, to be acquainted with (a procedure)
5. to experience, to go through, to learn
あなたは1990年から彼女を知っているのですか?