Table: election_results_1950_2
Columns: district
incumbent
party
first_elected
result
candidates

Question: How many results for minimum first elected incumbent Noble Jones Gregory?
SQL: SELECT MIN("first_elected") FROM election_results_1950_2 WHERE "incumbent" = 'Noble Jones Gregory'

Question: How many results for incumbent Noble Jones Gregory?
SQL: SELECT COUNT("district") FROM election_results_1950_2 WHERE "incumbent" = 'Noble Jones Gregory'