Sentence:  While the pictures of what precisely unfolded after Cissé looked to tread on Evans are not entirely conclusive, the Football Association will surely pore over them on Thursday before quite possibly using video evidence to impose lengthy <WSD>retrospective</WSD> bans stemming from an incident unseen by Anthony Taylor, the referee. 
Meaning of the word marked with <WSD> tags:  Of, relating to, or contemplating the past.