<span>Person versus person
In this case, it appears Romeo and Paris are arguing. Paris has come to arrest Romeo for the death of Tybalt, yet Romeo resists.</span>
IF I can sing well enough, I'll join the school chorus.
The IF implies that something is conditional i.e. it may happen, it may not happen (it depends on whether you can sing well enough!)
Hope this helps... :)
"chicken and dumplings" is the appositive in this sentence.