boys and girls i need your help in syntax

[dedo11]

hi all i hope u are all doing well

i have a question which is
Tree-drawing practice
use the brackets to represent the S-structure in the following sentence

1- the man who lives next door is very friendly

and the other question is
draw S-structure trees for the following sentence

يعني ايه قصدها بالاس ستركتش وكيف احلها ماني عارفة
لاني يوم جيت احلها زي الtree diagram العادي
قالتلي الدكتورة لا
so i dont know what she meant by S-structure

1- who did mary meet in the party ?
can anyone pls help me out
thank u so much in advance وجزاكم الله الف خير