The man Karen adores is friends with Bob

the M*
The main predicate in this sentence is "F2: _ is friends with _" ("A2" is part of the relative clause and is contained in the "M*" for now). As "b" is a singular terms, all we must do is deal with "the M*". We begin by sliding it out.

All dogs bark
Someone works for Nadia
Everyone loves someone
Some cup was put on every table by some man
There's a time at which everyone eats every doughnut
Only philosophers wear only diamonds
Every cat that cleans himself cleans an animal that catches mice
If someone is tall, then he is bigger than Rachel
Every dog that has an owner obeys him