is-greater-equal-than[value] ket returns yes/no if the value in ket >= value
is-greater-equal-than[13] |number: 13> |yes> is-greater-equal-than[21] |age: 23> |yes> is-greater-equal-than[1980] |year: 1977> |no> -- if the ket has no float value then return the empty ket |> is-greater-equal-than[13] |the cat> |>