premise: "M.I.L.F. $" (pronounced "MILF money") is a song recorded by American singer Fergie for her second studio album, "Double Dutchess" (2017). It was produced by Polow da Don and released as the second single from the record following "L.A. Love (La La)" on July 1, 2016 by Interscope and will.i.am Music Group. It debuted at number 34 on the US "Billboard" Hot 100 with 65,000 in first-week sales.
hypothesis: M.I.L.F Money appeared in the top 50 songs on the the US "Billboard" Hot 100. 
reason: MILF money debuted at number 34 on the US "Billboard" Hot 100 which is within the top 50 songs. I think it was difficult for the system because I used a range instead of an exact number.