Question 941727
Tom is shorter than Mary and older than Joe.
Age: t > j
Height: m > t
:
 Mary is shorter than Joe  but older than Tom. 
height: j > m
age: m > t
:
 Who is oldest?
I'm going to say Mary, she's older than Tom and Tom is older than Joe even though Joe is taller than her.
We don't care anything about the brother and sisters