
*** Yes
> > 
*** Yes
X = seal.

--1> 
*** Yes
X = penguin.

--1> 
*** No
> 
*** Yes
A = lion, 
B = ruminant.

--1> 
*** Yes
A = tiger, 
B = antelope.

--1> 
*** No
> 
*** Yes
X = cetaceous, 
Y = sea.

--1> 
*** Yes
X = seal, 
Y = ice.

--1> 
*** Yes
X = penguin, 
Y = ice.

--1> 
*** No
> 
*** Yes
X = seal.

--1> 
*** Yes
X = penguin.

--1> 
*** No
> 
*** Yes
> 
*** No
> 
*** No
> 
*** Yes
> 
