client years of operation area of operation country services
client
years of operation
area of operation
country
services
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
list length
text timespan text text <c,text>
agoco 1993-94 sarir field libya drilling, workover
what is the number of operations by an united states client ?
WP VBD-AUX DT NN IN NNS IN DT NNP NNPS NN .