sentence1: we have omitted field comparisons that involve level four generators in the eleven dimensional theory , but it is interesting to observe that some generators that are associated with the iib supergravity , including the dual fields , correspond to eleven dimensional generators whose associated fields are beyond those found in the eleven dimensional supergravity approximation .
sentence2: it is important to note that some of the dual fields associated with iib supergravity and the nine form in the massive iia theory correspond to fields in the eleven dimensional theory that are at levels higher than that which appear in the eleven dimensional supergravity approximation .