. "discover(during(E), Agent, Theme, Source)" . "NP V PP.source PP.theme whether S_INF"@en . "0.1"@en . "Agent V {from} Source {about} Theme [+wheth_inf]" . . "8.1"@en . "PP-P-WH-TO-INF; from-PP about-PP"@en . . . . . . . . . .