ser de

to be from; to belong to; to be of

→ ser
phrase Extremely common #179
to be from; to belong to; to be of Its meaning depends on the context and what follows. It can express origin (ser de México), ownership or responsibility (ser de la directiva), a quality (ser de fiar), or necessity/inevitability (ser de otro modo).
SP: No podía ser de otro modo.
EN: It could not have been otherwise.