V-----[2016-06-06T15:30:30Z] started.-----V
^-[2016-06-06T15:30:30Z]-V---[started.]---^
^------[{datetime}]------^
V----------------------------------------[On January 1, 2017 drilling started, then on February 1st of 2017 equipment broke down.]-----------------------------------------V
^-[On]-V--[January]--V---[1,]----V-[2017]-V-[drilling]-V---[started,]----V-[then]-V-[on]-V-[February]--V---[1st]----V-[of]-V-[2017]-V-[equipment]-V-[broke]-V---[down.]----^
^-[{_month_}]-^-[1]-V-[,]-^ ^-[started]-V-[,]-^ ^-[{_month_}]-^-[1]-V-[st]-^ ^-[down]-V-[.]-^
^----------[{_datetime_}]----------^ ^--------------[{_datetime_}]--------------^ |