color & icon name name mark first section
opened last ex-
tension length stations
color & icon
name
name
mark
first section opened
last ex - tension
length
stations
list length
number
number
first second first_number second_number
number
<t, text> text text text number number unitnum(unitnum) number
yellow line 1 higashiyama line h 1957 1982 20.6 km (12.8 mi) 22
how many lines exist in total ?
WRB JJ NNS VBP IN NN .
7
select count ( distinct c2 ) from w