country builder location ship class / type
country
builder
location
ship
class \\/ type
number parsed year month day
address
date text text address text text
6 march united states john roach and son chester, pennsylvania city of rio de janeiro passenger ship
give the number of ships that were launched in 1878 .
VB DT NN IN NNS WDT VBD-AUX VBN IN CD .
7
select count ( c5 ) from w