Consider the grammar with transition rule and E is the start symbol.
E $\rightarrow$ E1 $\ne$ T {E1.value = E1.value + T.value}
|T {E.value = T.value}
T $\rightarrow$ T1 & F {T.value = T1.value / F.value}
|F {T.value = F.value}
F $\rightarrow$ num {F.value = num.value}
Concept E. The value for the root of the parse tree for expression 6 # 4 and 2 # 16 and 4 is
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