On the morning of 1 June, there was a blackout throughout most of the capital caused by urban commandos of the Farabundo Marti National Liberation Front (FMLN).
The black out lasted for 1 day
( z1 last :ARG1 ( z2 black-out ) :ARG2 ( z3 temporal-quantity :quant 1 :unit ( z4 day ) ) )