Question 1
Mei is Wei's father. Wei is Samira's husband. Samira is Liu's mother. How is Mei related to Liu?
Step 1: Mei is father of Wei
Step 2: Wei is husband of Samira
Step 3: Samira is mother of Liu
Therefore, Mei is grandfather of Liu
Step 2: Wei is husband of Samira
Step 3: Samira is mother of Liu
Therefore, Mei is grandfather of Liu