Given an elliptic curve $E$ over $\mathbb{Q}$, I have read somewhere (But I can't remember exactly where) that the Beilinson conjecture asserts that: The rank of the albelian group $K_{2}(E)$  (the second algebraic K-theory) is equal to the rank of the abelian group of the rational points $E(\mathbb{Q})$. 

**Conjecture:** $\textrm{rk } K_{2}(E)= \textrm{rk }  E(\mathbb{Q})$  

**Question** What are some evidences of such conjecture? Is it verified in some known cases?