A # B means ' A is the sister of B '

A @ B means ' A is the daughter of B '

A & B means ' A is the husband of B '

A % B means ' A is the father of B '

If A % B & C # D @ E, then how is B related to E ?

Son-in-law

ATQ, 

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Please note:

  l   ⇒ Vertical line shown "generation gap".

 =  ⇒ Double lines shown "relation of spouse" 

—  ⇒ Horizontal line shown "relation in same generation other than spouse".

     ⇒ Rectangular box shown " Male".

     ⇒ Circular box shown " Female".

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