Officials in Gladewater are working to figure out the cause behind elevated levels of lead in the city's drinking water. On Monday, the city sent out a notice advising residents that water tested from June to September had higher than usual levels of lead. Levels that were not a violation under fed
There was not a single moment from June to September in which the water had a usual level of lead. 
( z1 moment :polarity - :ARG1-of ( z2 single ) :time ( z3 date-interval :op ( z4 date-entity :month 6 ) :op ( z5 date-entity :month 9 ) ) :time-of ( z6 have :ARG0 ( z7 water ) :ARG1 ( z8 level :mod ( z9 usual ) :quant-of ( z10 lead ) ) ) )