QUESTION $7$

$[4]$

Given the sentence

AAxEEy$(R(x,y{)}^{{?}^{?}}R(y,y))$

does the model $M$ below satisfy it$?$ Explain your answer.

$A=\{a,b,c,d\}$

$R^M=\{(a,a),(b,a),(c,a),(d,b),(b,b)\}$