Sentence:  Synthetic Cubism began with Picasso alone , late in 1913 or <WSD>early</WSD> in 1914 ; this was the point at which he finally took the lead in Cubist innovation away from Braque , never again to relinquish it . 
Meaning of the word marked with <WSD> tags:  at or near the beginning of a period of time or course of events or before the usual or expected time