[NTG-context] box width to fit longest line of text

Dear context users: I'd like to handle a block of text with 2 or more lines where the block width should be equal to the longest line in the block. I'd like the lines be center aligned in the block. Something like this: line1 second longerline another line In latex I can do it using parbox like this: \parbox{\widthof{second longerline}}{\centering{}line1\\second longerline\\another line} How can achieve the same or similar in context? Thanks in advance, bcsikos