Consider the CFGs $G_1=(V_1,,R_1,S_1)$ and $G_2=(V_2,,R_2,S_2)$ with the rules:

$S_{1}a{S}_{1}b|Ac|lon$

$AA|lon|$

and:

$S_{2}a{S}_{2}b|c|lon$

respectively. Does $L(G_1)=L(G_2)?$

Yes.

No$.$