Statement: If parking space is not available in office, park your vehicles in the mall and walk to the office.
Assumptions:
I. The mall is at a walk able distance from the office.
II. The office does not allow visitors vehicles in its premises.
If only I is implicit
Assumption I is implicit, because if there is no parking space, then “park your vehicles in the mall and walk to the office” given in statement justify that mall in at a walkable distance from the office.