again.
however here is an example not from the conversation.
number one, my friend who is working in new york city is coming to visit.
number 2, my friend who i met in new york city is coming to visit.
the first sentence uses who as a subject pronoun.
this means that you can reduce the sentence more.
on the other hand, in the second sentence, you see who and then the i next to it.
this is a sign that you are using who as an adjective clause object pronoun.
this clause cannot be reduced.
rule two, check the verb situation of the adjective clause.
a passive verb, they can be reduced.
let's look at the adjective clauses from the 